Introduction: Computer (Laptop) Cooling Basics
The cooling of the CPU(Central Processing Unit), otherwise referred to as "The Chip" or to laymen "The Brain" of the laptop is a dilemma that most manufacturers have to face when designing a laptop enclosure (casing) and choosing the correct CPU for it. The cooling is normally performed by a fan and some kind of metal conductor like copper or aluminum called a heat sink. The CPU, and lately the GPU(Graphics Processing Unit), are "connected" to the metal heat sink via a thermal grease or compound. This grease conducts heat but not electricity. The "trick" for manufacturers is to get rid of as much heat as possible using as small a fan and heat sink as the CPU will allow. Vents are also cut into the casing allowing the fan to suck cool air from the bottom, force it over the heat sink and blow it out the side or rear thus cooling the CPU and GPU. In more modern times copper is being used as the conducting metal, liquid is "pumped" through the system and radiators and exhaust ports are used just like in motor vehicles. All this to get rid of the heat and make the system run faster. 

The Problem
The problem is that over time dust and other particles clog the vents, fan and exhaust port or radiator of the system thus restricting air flow and cooling. This is fixed relatively easily by blowing out the vents and fan with air or using a brush or earbud (Q-tip) to clean away the dust. Remember: In the computer world - DUST DESTROYS! There is however another hidden problem that occurs when computers (laptops) heat up or overheat. They tend to dry out the thermal compound that conducts the heat thus causing the system to overheat more quickly. Luckily most CPUs, GPUs and chip manufacturers have built in protection for this. They step down the operating speed bit by bit until they eventually switch off the CPU and thus the system shuts down. So if you have a computer system that starts working slower and slower and then switches off for no apparent reason, overheating could be your problem.

The Solution
To solve the overheating problem, especially in laptops, I am going to show you how to get to the cooling unit, dust it out, replace the thermal grease and put everything together again. In order to demonstrate this I will be using a friend's LG F1 Pro Express Dual laptop that started exhibiting just such symptoms. It would become sluggish and then suddenly switch off for no reason. This caused him a lot of lost work and a corrupted Outlook PST email file. Here I will show you step by step the solution to this nasty problem.

Interesting Tech Fact: I captured all the pictures with my Samsung Galaxy S cellphone.  


Step 1: Preparing for the Process

Before you start, make sure you have made a backup of all your data files and that if in the unlikely event that something does go wrong, you will be able to restore your application programs and the data. (Tip: Test the data files to make sure they were backed up correctly!)

Make sure the backup is totally separate from your laptop, not on the same hard drive, on an external device like a SD / USB or portable drive.

Prepare an area to work on that is well lit, clean, dry and has enough space. Use a towel or soft cloth under to laptop to protect it because it will be lying on it's screen for most of the time during the procedure. Make sure that nothing you use, even your clothes, generate static electricity. This process will take about 30 minutes.


<p>I changed thermal grease and compounds in my acer5750. It worked for CPU, but not for GPU - it's even worser. Now my laptop always turn off every time when I use dedicated graphic card (gt 540m).</p><p>when only CPU is working is fine. Very low temperatures (when playing games it's not more than 70 Celsius).</p><p>I replaced grease two times, but it didn't help.</p><p>Is there possibility that I damaged something e.g. heatpipe? Or it would also turn off my computer also when I use CPU.</p><p>Or it is more probably that there is loose between hetpipe and GPU? I read that many acers have problem with this and often service put thick layer of thermal grease.</p>
<p>Hi there PiotrP45,</p><p>You see a full review of the Acer Aspire 5750 graphics performance here: <a href="http://www.notebookcheck.net/Review-Intel-HD-Graphics-3000-graphics-solution.43710.0.html" rel="nofollow">http://www.notebookcheck.net/Review-Intel-HD-Graph...</a></p><p>It is highly unlikely that you damaged the heat pipe without noticing it. I have just taken my wife's Dell notebook apart twice to see if the heat pipe could be damage by normal removal, cleaning and grease application. If you worked gently and with care, the answer is &quot;No&quot;. You would have noticed immediately if you were too rough and broke something. What more likely happened was that your GPU was damaged before you did the heat sink removal. That is why it was overheating in the 1st place. You can make sure the thermal conductor is touching the GPU. Many times a thermal pad, (something like double sided mirror tape), is used on the GPU. This must not be removed because it is a few millimeters high and causes the contact to be made between the GPU and the heat sink element. Thermal grease can be applied directly on the pad. Use apps like <a href="http://www.cpuid.com/" rel="nofollow">http://www.cpuid.com/</a> or <a href="https://www.techpowerup.com/gpuz/" rel="nofollow">https://www.techpowerup.com/gpuz/</a> to try and determine what the problem really is.</p>
<p>Hello Andre, I have paid 'experts' a couple times to try to fix my overheating Compaq Presario CQ57, since I can't tackle it myself. It's still overheating........as it's over 4 yrs old, should I just cut my losses and replace? Does there simply come a time when this CAN'T be fixed?? It's so frustrating, becos I love the laptop and everything else is fine. I replaced the battery last year, since was told that might help. Nope! Thanks.</p>
<p>Dear Eliz656,</p><p>Overheating can always be fixed unless it is a factory fault and the laptop was overheating since it was brand new. The simple rules to follow are (tick then off as you check or solve them):</p><p>HARDWARE:<br>1. Is the laptop dust free internally? (The air vents especially)<br>2. Is the fan operating well? (sometimes it is best to set it to run always.)<br>3. Is the thermal grease on the CPU and GPU still fine?<br>4. Is air flow being blocked while working?<br>5. Are you using external cooling fan/tray to help?</p><p>SOFTWARE:<br>6. Are you running at too high a resolution that generates too much heat?<br>7. Are you running too many programs that tax your CPU?<br>8. Is your laptop struggling for resources and always swapping to hard drive?</p><p>I solved a friends desktop overheating problem just last week by blowing out the dust AND setting the graphics card to a lower resolution. Now the PC does not cut out anymore.</p><p>Go to <a href="http://support.hp.com/us-en/product/Compaq-Presario-CQ57-Notebook-PC-series/5091489/model/5111956" rel="nofollow">http://support.hp.com/us-en/product/Compaq-Presari...</a></p><p>to find more help on your laptop. My laptop is older than 4 years and still going strong and so is my wife's Compaq. </p>
<p>i think i would like to advise you please open the laptop and apply some cooling paste around processor and clean the laptop using the Use your compressed air can to blow dust and clean the ram . cutdown some programs and start up program for more visit the post <a href="http://fixingblog.com/fix-laptop-overheating-keeps-turning-off/" rel="nofollow">http://fixingblog.com/fix-laptop-overheating-keeps-turning-off/</a> and see if this can help . thanks </p>
<p>Nice post and tips to stop &lt;a href=&quot;http://www.dellservicecenter.net&quot;&gt;laptop overheating problems&lt;/a&gt;</p>
<p>Hi Andre , I've an old Compaq laptop , Presario V6000 . Because of a problem in BIOS , it can overheat too fast . because of some software incompatibility , i can't see temperature of the CPU using a software . it has never shutdown because of heat ,or at least I've not experienced . but sometimes it gets too warm . I'm worried if it will break because of heat. When we can say that a computer is likely to break because of heat ? for example when temperature is over 100 degrees Celsius? is there any other way to see the CPU temperature ? i tried to use a thermometer , but i doubt it will show me the correct temperature .</p>
Hi RezaG, <a href="http://www.hp.com/ctg/Manual/c01035886.pdf" rel="nofollow">Here</a> is the service guide for your laptop. (Click on Here to view the Pdf manual in your browser.) The guide will show you how to take your laptop apart and clean the dust out. You can find your bios upgrades <a href="http://support.hp.com/us-en/product/compaq-presario-v6000-notebook-pc-series/1842076" rel="nofollow">here</a>.<br> <br> Laptop internal temperature is related to the CPU and GPU and lately RAM. The CPU and GPU (graphics card) generate the most heat. Modern CPU's start scaling down their speed when they start to overheat until they shut down completely to protect the CPU. The Intel Core 2 Duo 1.7 Ghz CPU, which is one of the CPU's your laptop can take, has a T-Junction spec of 100&deg;C. Junction Temperature is the maximum temperature allowed at the processor die. (Intel specs can be viewed <a href="http://ark.intel.com/products/29758/Intel-Core2-Duo-Processor-T5300-2M-Cache-1_73-GHz-533-MHz-FSB" rel="nofollow">here</a>. ) Thus it is safe to say your CPU temperature should not reach 100&deg;C. Keeping it below 90&deg;C is advisable. &nbsp;
<p>Hi Andre, my computer seems to be shutting down every 15 mins or so while im playing a video game. I brought it to the repair shop and the staff there told me it was because my laptop was too old? Oh well, seems to me they weren't as good as I thought they'd be but would a small vacuum cleaner work? A couple of my friends suggested me to try THAT method out but I'm not so sure if that'll be okay or not. </p>
<p>Yes, a small vacuum cleaner would work, but a big vacuum cleaner would work better. ;-)</p>
<p>This looks like something I need to try on my laptop.</p>
Hi, Mr. Andre. I don't know if this the right thread where I should ask this but my laptop's keyboard is malfunctioning. I press on whatever key ONCE but the result is as if I have pressed the key a hundred times. It is now impossible to use it. The reason I am asking it here is because it happened after I left my laptop charging (and may have overheated). Can an overheating battery destroy the keyboard's functioning? Thank you! I hope I am not bothering you!
Just replace the keyboard. It will cost you about 20 bucks and take you about 15 minutes. Go to Amazon and type in the model of your computer and then keyboard after that and you can find them. Then there are tons of instructional videos on YouTube that can walk you through it. There's nothing to changing out a keyboard.
Hi, firstly, I am sorry I took so long to get back to you, I missed this one completely. Secondly, an overheating laptop will not cause the keyboard keys to stick. It normally does the reverse and makes your keyboard sluggish to respond. You could try to clean out the keyboard but I doubt that dust, dirt (or whatever was messed on the keyboard) will cause EVERY key to stick and repeat. Normally when a few keys stick (or don't respond) its because they are dirty. Coffee and soda that was messed on the keyboard (even just drops) normally cause this because of the sugar they contain. You could try plugging and external USB keyboard in, to see if the problem continues. If it does, its not the keyboard. Replacing the keyboard is also an option.
<p>Hello, Mr.Andre Coetzee, I'am using DELL Vostro 1015 laptop from past 4 years, but nowadays it gets heated up very fast and I'am not using any kind of material under laptop like pillow. After getting heated, my laptop gets lagging while doing work please help me. What can I do to solve this problem.</p><p>Sometimes it is very difficult to work on it.</p><p>This is to inform you that I'am using Windows 7 and want to upgrade to Windows 8 so can you tell me that if, should I upgrade or not* </p><p>*(If no then give reason) *</p>
Hi PRAFULP,<br> First off, lets deal with your upgrade issue. Why would you would need to upgrade to Windows 8? Is there a much needed special feature that will help you? If not, don't upgrade. However, here are the more tangible reasons why not to:<br> <br> <strong>1.</strong> The Dell Vostro 1015 was not designed for Windows 8<br> <strong>2.</strong> The Dell Vostro 1015 has no Windows 8 drivers<br> <strong>3.</strong> Windows 10 (Microsoft Edge) will replace Windows 8 in the 2nd half of 2015. The new Windows 10 OS will be able to run Android and iOS apps.<br> <strong>4.</strong> Don't fix something that is not broken.&nbsp;<br> The only reason I can think of why you would is that Windows 8 is lighter on resources, starts up slightly faster and has better security.<br> <br> Now, for your overheating problem. Your laptop is full of dust. Open it up. Blow out the dust and lint. Replace the thermal paste of the CPU. It should then be fine. Please only do this if you know what you are doing and backup your data before opening your laptop.<br> You can find the service manual<a href="http://www.dell.com/support/home/us/en/04/product-support/product/vostro-1015/manuals" rel="nofollow"><strong> HERE</strong></a>.
<p>Hi, I have Hp1000 notebook for my personal use but after installing windows 8, heat sink started to exhaust severe kind of heat. What should I do?</p>
Hi malik3744,<br> Windows 8 is optimized for touch screen enabled devices, so if you do not really need to Windows 8, go back to your previous OS. If you cannot do this, clean out all the dust out of you laptop as per my instructable, (See <a href="http://www.hp.com/ctg/Manual/c03762978.pdf" rel="nofollow"><strong>HERE</strong></a> for the HP 1000 service manual). If you have done this, I suggest using a fan driven cooling pad to help with the air flow. Windows 8 overheating like this normally happens when the GPU (graphics card) starts working harder. You can investigate Windows 8 options to reduce GPU (and CPU) usage. This will reduce the temperature on the laptop.&nbsp;
<p>I have dell inspiron N5010 ,all time my laptop over heat quickly within 5 minutes ,but there is no interruption in running programe and working on my laptop,but I need solution how to cooling system.</p>
Hi biraj.debbarma.9<br> <br> If you are not blocking the cooling vents by working on a blanket or piece of material then you have dust and lint in your system. Even a cooling pad will only go so far to help if the system is clogged with dust and lint.<br> <br> Your laptop will have dust collected in the fan. See this<a href="https://www.youtube.com/watch?v=nSQOzQ6UyTI" rel="nofollow"> video</a>&nbsp;to see how much dust can collect and where. This <a href="https://www.youtube.com/watch?v=3YXGa5rTw1o" rel="nofollow">video</a>&nbsp;shows you how to take apart your laptop to clean out the dust in the fan and heat sink.&nbsp;
<p>I have a Dell Latitude D530, and was wondering how i would clean the vents.</p>
Hi CandyS,<br> If the vents on the computer are covered with dust and not allowing air to pass through and you want to clean them, then:<br> <br> <strong>1. </strong>Turn off the System<br> <strong>2.</strong> Unplug the AC Adapter<br> <strong>3.</strong> Remove the Battery, for instructions on how to remove the battery see the <a href="http://www.dell.com/support/home/us/en/19/product-support/product/latitude-d530/manuals" rel="nofollow"><strong>Service Manual</strong> </a><br> <strong>4.</strong> Use air (compressor, can, vacuum cleaner, etc) to blow the dust out of the vents.<br> <br> (The<a href="http://www.dell.com/support/home/us/en/19/product-support/product/latitude-d530/manuals" rel="nofollow"> <strong>Service Manual</strong></a> also shows you how to remove the back cover so you can clean the fan with a brush.) &nbsp;
<p>Thanks for the advice, bt it was a gift from a friend so i have no manual.</p>
<p>Hi CandyS,</p><p>Not to worry, just click on the words<strong> <a href="http://www.dell.com/support/home/us/en/19/product-support/product/latitude-d530/manuals" rel="nofollow">Service Manual</a></strong> in my previous post (and this one ;-) ) and you will be taken straight to the manual section for your laptop.</p>
<p>hello sir </p><p>i am using lenevo sl400c laptop, and it producing more heat can tell me what i have do</p>
<p>Quaseema,</p><p>Which of my suggestions did you try and what was the result? You can find the manual showing you how to take your laptop apart and clean the fans on the Lenovo site here: <a href="http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles_pdf/43y6762.pdf" rel="nofollow"> http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mo...</a></p>
<p>hello sir </p><p>i am using lenevo sl400c laptop, and it producing more heat can tell me what i have do</p>
<p>Quaseema,</p><p>Which of my suggestions did you try and what was the result? You can find the manual showing you how to take your laptop apart and clean the fans on the Lenovo site here: <a href="http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles_pdf/43y6762.pdf" rel="nofollow"> http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mo...</a></p>
<p>hello sir </p><p>i am using lenevo sl400c laptop, and it producing more heat can tell me what i have do</p>
<p>Quaseema,</p><p>Which of my suggestions did you try and what was the result? You can find the manual showing you how to take your laptop apart and clean the fans on the Lenovo site here: <a href="http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles_pdf/43y6762.pdf" rel="nofollow"> http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mo...</a></p>
<p>The fact that its not overheating doesn't mean you didn't use too much paste though, all it means is you got lucky this time and seem unwilling to take advice from someone who has been doing this stuff for 20+ years. Even if the effects of too much thermal paste can be minimal, its costing you money, since GOOD paste is expensive.</p>
Dear BryanL2<br> It seems then that I have been very lucky for over 30 years applying the paste like I do. <strong><em>(I built my 1st 4.77 Mhz PC from scratch in the early 80's and continue fixing and building PCs today.)</em></strong> Although the cap of my thermal paste is broken and it is nearly empty, I still have the same tube of thermal paste I bought 10 years ago. People do not have to follow my advice. None of the more than half a million people who have read my instructable have to. They can decide for themselves, supported by the extensive descriptions, comments like yours and external website links, if they want to follow my method or not. It is not that I am unwilling to accept your advice, however you comment is contradicted by Intel and lab tests. Have you looked at the photographic procedure supplied by the CPU manufacturer that I included? I have attached photographs from Intel and supplied the <strong><em><a href="http://www.intel.com/support/processors/sb/CS-030329.htm" rel="nofollow">link</a></em></strong> to the information on the Intel website at the end of the instructable. Select &quot;How to Apply TIM&quot; from the top of the Intel page to see their procedure. Here you will see the amount of paste Intel recommends. They empty the complete tube, that was supplied, on to the middle of the chip and do not even spread it thinly. According to you, Intel then also use too much paste. So how can I accept your statement as fact when they contradict the manufacturer's recommendations. Take a look at <strong><em><a href="http://www.tomshardware.com/reviews/thermal-paste-performance-benchmark,3616.html" rel="nofollow">Tom's Hardware</a></em></strong> where they explain in detail <strong><em>everything</em></strong> that you need to know about cooling. Then check out the <em><strong><a href="http://www.tomshardware.com/reviews/thermal-paste-performance-benchmark,3616.html" rel="nofollow">tests</a></strong></em> they did on the type and brand of thermal paste used and see how much that contributes to an increase in temperature. Even if you applied the right amount of paste the type and brand also matters. It matters much more than if you applied the paste thickly or thinly. Remember the thickness is a perception because some people believe there should barely be paste and it should be spread, others want a bit more paste but not spread, etc. Tom's really does an excellent job of explaining <strong><em>everything</em></strong> about cooling. Even the fact of blobbing the paste in the middle and let the heat sink spread it for you, the way Intel recommend. I supplied the links to this at the end of the Instructable. I am sure you probably knew this already. I am also sure that people that revive their overheating laptops will be so grateful that the few $ that was wasted on thermal paste will not matter to them. A few people have told me I use too much thermal paste but nobody has read the Intel description or the Tom's Hardware information. The manufacturer's information and lab test contradict the statements that I use too much paste. However, you can please all of the people some of the time and some of the people all of the time but you cannot please all the people all of the time. Thank you for your positive and constructive comments. I am sure your contribution will help others make informed and correct choices.
<p>Waaaaaay to much thermal paste on that small area, you need like 1/4 that amount.</p>
Hi BryanL2,<br>Thanks for your comment. This topic is covered extensively in the description and the comments. The myth buster that the laptop has been operating for more than two years without an overheating problem should be proof enough that there was not too much past on.
<p>Hi, Great post and Thanks for sharing this nice post...</p><p>see : http://www.geeksonsite.co.nz/</p>
<p>hello, i cleaned the heat sink, no more dust there, i applyed a new layer of thermal compound (arctic sylver) and my laptop pc is same as before .. slugish and shuts off wih no warning .. what should i do?</p>
<p>right bottom hand corner right click on your battery icon choose change setting then go into advanced settings turn your cpu max power to 60% this should stop your computer from over heating</p>
Hi taz99taz,<br><br>Cleaning the dust and re-applying thermal grease is only part of the solution. What you also need to do is make sure your laptop has good airflow going through it. Some have badly designed ventilation and a cooling pad (little tray/stand with fans on) might help solve your problem. Do you know if it is temperature? Have you run any utility to monitor if the CPU temperature is rising or not? You BIOS settings might also be set quite low and then the laptop will shut down even if it is not really overheating because you &quot;told&quot; it to in the BIOS. Check your airflow and monitor the temperature and get back to me with your findings.
<p>Hello mr. Andre, thank you for the reply. I used Everest Ultimate to check the CPU temperature. It goes up to 92-93*C then it just shuts off.. the only way i can use it now is flipped over with the covers removed and connected to a tv. But if i try to play a game or watch a movie or video it shuts off. It was working fine until suddenly it started to do this (about 2 and a half weeks ago it started).. Should i start looking for a new one? (I have an Acer Ferrari One 200)</p><p>Thank you.</p>
hello taz99taz,<br>sometime oil from fingers and even dust can cause issues, even a very little amount. This may be a very stupid question, is the fan even running? When a CPU gets that hot, it should sound like the CPU fan is ready for take-off. I would be willing to take a look at it if you are willing to pay for shipping. Or if you don't want it, I would be happy to take it. I could even trade you for a netbook I have if the laptop has the right specs. (if you are willing to) if you are interested, my email is zappybear@gmail.com.
<p>Hi taz99taz, it seems as if your laptop is overheating if it reaches the high 90s in &deg;C. It also seems to be the graphics card that is causing the overheating because it happens when you do graphic intensive operations. The graphics processor (GPU) might also have a heat sink that needs to be cleaned and re-greased. So lets put down the steps you should have done so far for your Acer Ferrari One 200:</p><p><strong>1. </strong>Removed / Uninstalled all unused / not needed programs that run resident in the background. These programs cause higher CPU usage and thus contribute to heat build up.</p><p><strong>2.</strong> Defrag your hard drive. When the heads jump around a lot looking for data it generates more heat.</p><p><strong>3.</strong> Make sure the air vents under and on the sides of the laptop are clean, clear and open. Even when you use the laptop, make sure something is not blocking the air vents. Feel around the laptop to make sure the air flows out easily. Some people even take a Dremel tool and make the vents slightly bigger to promote better air flow by cutting away every alternate vent &quot;bar&quot;. <em>Remember that this will void any warranty, should be done with the laptop off and at your own risk</em>. Does your laptop still have little rubber feet that raise it slightly off the surface it's on? If not, get some!</p><p><strong>4.</strong> Get yourself a cooling pad. This is a small cheap stand with a fan or two on to help pull air through the laptop. There are easy and cheap ones you can make yourself here on instructables.</p><p><strong>5. </strong>Clean out all the dust in the laptop and all its fans. You can use a vacuum cleaner to suck out the dust on a weekly basis so you do not have to open the case every time. Blow the dust out if you opened the case. The Acer is very touchy about dust and even a little bit prevents air flow and slows the fan down. <em>[</em><em>Turn your laptop upside down. Unscrew the 4 small screws and remove the large panel. Disassemble the fan / ventilator by unscrewing the 3 screws ( do not bother to remove the fan plug) Remove the accumulation of dust between the fan and the cooler. Blow out the dust through the gate of the cooler.]</em></p><p><strong>6.</strong> Re-apply the thermal grease on the CPU and GPU.</p><p><strong>7.</strong> Operate the laptop in a cooler/colder environment like closer to a room fan or air conditioner. The ambient room temperature can also contribute to overheating as the air drawn in to cool down the CPU is already warm.</p><p><strong>8.</strong> Have the fan run all the time on the laptop and not just when it overheats. This is normally controller in the BIOS or operating system.</p><p><em>NOTE: Remember: You use the laptop to run games and movies and this will cause the laptop to run hotter because the hard drive is working harder and the graphics card is constantly on at a higher resolution. Some of the above suggestions might void your warranty and should be done with the laptop turned off, unplugged and the battery removed at your own risk.</em></p><p>Let me know if this helped you.</p>
<p>Has anyone heard, that if your laptop overheats too much, it's probably bugged?</p>
Hi dopendead,<br>Although anything is possible and should a laptop be bugged the device might contribute to a small increase in power consumption and heat, but not enough to cause overheating. If somebody got hold of your laptop and was able to take it apart, it would be very easy to install a little FM transmitter that runs off the laptop battery. Many years ago, when Apple was still a seed in Steve Jobs's pocket, I used to build small FM bugs from transistors. They could fit into half a match box and have a signal range of about 100 to 150 m. You would use a normal FM radio to tune in to the frequency to hear whats going on. Now days it would be a very small IC that would be installed. What you must ask yourself is why would somebody do it?
<p>What`s about If I don`t use any thermal compound?</p>
<p>If you do not use any thermal compound your CPU could over heat. This will affect performance and your computer will start working slower and slower. Earlier CPUs would burn out. Newer CPUs step their speed down when they over heat. They eventually shut down when they get too hot to prevent damage. However over heating is not a good thing and could permanently damage and even destroy your computer. </p>
You seem to apply too much thermal paste. You will only need the size of a pea or less if you are doing on a laptop.
Actually that is not totally accurate. In my 30 years of replacing thermal grease on chips I have tested thin layers and thick layers with very little difference (+/- 5%) in the temperature of the unit. The reason for this is that the pressure applied between the heat sink and the CPU by the retaining springs will spread the grease around and force excess paste out. See Step 11 Afterword of the instructable for more on the grease thickness as well as an 2013 update with info from Intel.
<p>There are 2 problems with using too much grease/paste.</p><ol><li>If you are using a conductive paste, (silver based) too much can short out the tiny resistors/caps on the top of the CPU/GPU when it gets squeezed out.<li>Grease is not nearly as conductive as copper. The purpose of thermal grease is to fill in any voids between the heatsink and the die. The thermal transfer of metal to silicon is better than metal to grease to silicon.(But metal&gt;grease&gt;silicon is better than metal&gt;air&gt;silicon.)</ol><p>The worst thing you can do with any grease is to pre-spread it. This just creates air pockets in the grease that get trapped under the heatsink.</p>

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Bio: I love finding out how things work. I like reading. I love the Internet for its vast amount of information. I like helping others and ... More »
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