Instructables

GEEK-TO-YOU: How to take care of your computer

The second Instructable in the GEEK-TO-YOU series, "How to take care of your computer" will guide you on how to take better care of your computer to improve and maintain it's longevity and efficiency.

This may not look like many steps, but there is plenty of information on each one! 


 
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Step 1: Heat: A computer's kryptonite

Heat is one of the biggest factors in your computer's performance. Heat plays such an important role, your computer case is specifically designed to keep it cool. When the components in your computer get hot, their performance drops, and your computer runs slower. This is why computer cases are designed to keep your computer cool; but, bad placement of your computer can render the design useless.

First, I must explain how the computer case aids in the cooling process. Most likely you will notice a vent at the bottom front part of your computer case. Cool air (the air is cool because it is lower; heat rises) is drawn into the computer through that vent by a fan that is right behind it. As the air is sucked in, it cools the components down; but, the air gets hotter as it rises. A fan on the back side of the computer near the top pulls the hot air out. It is also drawn out by the power supply's fan which is right above the rear fan. In some computers, there is no rear fan, just the power supply's fan.

If you place your computer so that something blocks one vent or both, (i.e. a wall, cabinet) then cool air can not come in, or hot air will not be allowed out; both of which results in a hotter computer. Also, if your computer is kept in a confined space, the hot air will be blown into the area and stay there; then, hot air will be sucked back into the computer.

Another thing that keeps your computer hot is dust, believe it or not. Dust is like insulation, or a blanket. The design of your computer case creates a suction effect. This suction effect is also important in cooling your computer; but, just like bad placement can block the vents and make them useless, bad placement can turn a positive design into a negative, turning your computer into a literal vacuum. If you place your computer on the floor, it will suck up all of the dust that lies there. You might not even have to use your Dyson anymore. This is especially bad on carpeted floors because carpets hold on to so much dust...you might even get loose carpet in your computer. One thing you can do to keep your computer off the floor AND off the desk is to purchase a "CPU" holder. (CPU really means processor. For some reason, people call computers CPU's, this is incorrect; hence the air quotes)

Despite your diligent efforts, dust will inevitably creep into your computer. You should regularly clean it out with compressed air. NEVER use a rag or cloth to clean it out. NEVER use cleaning products or other liquids to clean it out. Refer to my Instructable, "GEEK-TO-YOU: How to safely troubleshoot, clean, and repair a computer" for an in-depth guide on cleaning your computer and other important information.

Fun fact: Your computer's processor, or CPU (central processing unit), does so many calculations, and gets so hot, that with out a fan and heat sink, it would burn through the mother board of your computer. 


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bellyr688 months ago
Learn why this Tripp Lite surge protection device is important in your computer and notebook. Click here
Del-Air11 months ago
Great tips in your instructable! Plugging your computer and electronics to surge protectors will protect them from potential hazards, especially during thunder storms. The average home receives 20 surges per day that can potentially damage sensitive electronics. As an appliance repair technician at Del-Air, we frequently replace as many as 10 computers and appliances per week.
www.delairelectrical.com
darman12 (author)  Del-Air11 months ago
Thank you very much! I can't believe you replace that many computers each week!
blkhawk1 year ago
You need to rectify a common misconception.

"CPU (central processing unit): also known as a processor,..."

A processor is part of the CPU but it is not in itself the CPU. CPUs have other components like the clock to synchronize all the functions of every component in the computer. Also consider rewriting the following paragraph:

First, I must explain how the computer case aids in the cooling process. Most likely you will notice a vent at the bottom front part of your computer case. Cool air (the air is cool because it is lower; heat rises) is drawn into the computer through that vent by a fan that is right behind it. As the air is sucked in, it cools the components down; but, the air gets hotter as it rises. A fan on the back side of the computer near the top pulls the hot air out. It is also drawn out by the power supply's fan which is right above the rear fan. In some computers, there is no rear fan, just the power supply's fan.

It is the air cool because it is lower? Cool air is denser therefore it goes down and hot air is less dense therefore it rises. However the design of the computer case allows for hot air to be forcibly exhausted through the computer fan or fans.

darman12 (author)  blkhawk1 year ago
The CPU is the processor. I just found this article.

I am not exactly sure what you mean by:
"However the design of the computer case allows for hot air to be forcibly exhausted through the computer fan or fans."

The computer case IS designed how I described. There fan in the front (near the bottom of the case) of the case to pull in cool air. The fan in the rear pulls it out after it gets hot from the components. This cycles cool air through the computer while pulling the hot air near the top out. That way you do not have hot air sitting in the computer, you constantly have cool air going though it.
darman12 (author)  darman121 year ago
Let me fix what I said "The fan in the rear pulls it out after it gets hot from the components." The fan in the rear top part of the computer pulls out the hot air which rose in the case.
I am an A+ Certified Computer Professional. I have worked on computers for over 20 years now. Like I said, it is a common misconception to believe that a processor is the CPU. There are other components that make the CPU, like the computer clock. A Wikipedia article describes what is a CPU.

"The central processing unit (CPU, occasionally central processor unit[1]) is the hardware within a computer system which carries out the instructions of a computer program by performing the basic arithmetical, logical, and input/output operations of the system. The term has been in use in the computer industry at least since the early 1960s.[2] The form, design, and implementation of CPUs have changed over the course of their history, but their fundamental operation remains much the same."

Regarding cooling in a computer, I have worked on computers that have the fan at the bottom of the computer, and some had them on the side. An analogy would be an exhaust fan installed on a window or an attic to draw the hot air out the house.

darman12 (author)  blkhawk1 year ago
Ok, I am sorry I questioned your expertise. I am taking A+ Certification this year in high school. My teacher told us that CPU and processor are the same thing. I will let him know. I will also note the misconception in the Instructable.

Ok, your analogy for the fan makes sense. I was just saying that the fan at the bottom pulls cold air in to cool down the components, then the one at the top pulls the hot air out....is that correct? The in the rear is positioned at the top because that is where the hot air goes. That is what I was trying to describe...I should have done a better job. Sense you have so much experience in the industry, you will be the authority in this situation.

It is cool that we are interested in the same industry! What have you done in your career? I would be very interested in that.
Mention that although the processor is the main part of a CPU, other microprocessors are involved, and sometimes there are not physically next to each other on a motherboard like crystal clocks and other coprocessors. Thread carefully! Maybe it is better not contradict him in class but a one on one conversation, and be as polite as you are. To prepare for your certification, you may want to have a few books in your personal library.
I must apologize to you. You and your instructor are also right. I checked my old reference books to make sure that I gave you accurate information. It seems that newer processors are becoming more and more miniaturized. The functions of coprocessors are becoming integrated to the processor. In the future not only processors but motherboards will have less and less components.
About your question, I recommend that you plan to continue your studies. The certification might help you earn some money while you continue your university studies. An A+ certification will be more valuable with a degree in Computer Science. Also a Network+ certification is becoming more in demand. The market for certified professionals is larger in big cities. In the small city where I live, the market for computer repairpersons is saturated.
darman12 (author)  blkhawk1 year ago
Oh, thank you. I am also sorry because I held you in contempt earlier.

I absolutely plan to continue my studies. I am way too eager to learn more! I was hoping to get a good job during high school and college one I get my A+ Certification because I know that is what employers would want. I did not know there was Network+ Certification, thank you for telling me! I am planning on going into a career of network engineering! I live in a small city as well, Sandpoint Idaho. I do not think there will be such a demand for these skills. But, maybe I will be hired by a business that needs a computer technician or something.
darman12 (author)  darman121 year ago
I was kind of annoyed that somebody was trying to correct me. I was thinking "Oh my gosh! I'm in A+ Certification and have taken Intro to Tech. My teacher knows what he is talking about!!" But, now I understand where you are coming from. I am sorry.
darman12 (author)  darman121 year ago
I didn't know that you were certified and have been for 20 years.
Back when I became certified, once you were certified you were certified forever. I believe that now they want you to recertify every so often. By the way, I gave my youngest brother my copy of Scott Mueller's Upgrading and Repairing Networks. Another great book whenever you decide to study for your Network+ exam.
darman12 (author)  blkhawk1 year ago
Ya, my teacher was just talking about that. He said that you were certified for life until January 1, 2011. If you are certified for the first time after that date, you have to re-certify every three years.

Earlier I emailed Intel (pretty ridiculous) and I thought this might bring some closure to our "debate":

"Please be informed that these terms [CPU and processor] are synonymous. CPU states for Central Processing Unit or Central Processor Unit.

It may be also named as the Central Processor, but more commonly its called Processor."
I am also A+, among many other certifications. You will find that the A+ is just an entry level certification... it doesn't stand for much considering that most of your competition in larger areas (like Chicago in my case) will have the A+ as well as Cisco and Microsoft certifications.

blkhawk is correct that the processor is separate from the CPU, but you are right that processors now have all the functions of the CPU built right into them.
I heard that the Cisco certification is tough! Only brawny men like you with hairy chests can pass it.
Oh yes, it is very tough! I had to take it twice before I got it... although I technically should have got it the first time. I had a simulation question that was malfunctioning, and the proctor couldn't do anything about it. (I was doing it right). That one question was the make it or break it for me. Luckily the second time I took it Cisco let me take it for free! ;)
darman12 (author)  thegeeke1 year ago
You should post your networking Instructables to my group: GEEK-TO-YOU
Sure, the next time I'm on a real computer, I'll do that. :)
darman12 (author)  thegeeke1 year ago
I think accidentally denied one of you Instructables, haha. Just request it again.
OK, I'll probably do that tomorrow. :)
darman12 (author)  thegeeke1 year ago
Oops, I accidentally posted that again on your other Instructable...making sure you don't forget I guess...
darman12 (author)  thegeeke1 year ago
I am very much aware that A+ is an entry level certification. I am only in high school, and A+ is essential in the computer/technology industry. A+ is to get my foot in the door, to get my career started. Having A+ will also make it easier to get a job in general, compared other students who do not have anything. I am going to go to college to become a network engineer, A+ is just the beginning.
OK, some people tend to be arrogant about their A+, so I just wanted to throw that out there. ;)

(by the way, you wrote a very nice instructable!)
darman12 (author)  thegeeke1 year ago
Thank you :)
I agree that he wrote a nicely done instructable, but he needs humility. The certification is not a warranty that every door is going to be open for you. To be competitive in today's world you need education and training, lots and lots of both. You will need a network of people that will be willing to give you a hand. And if you are LUCKY, you might find a good job. One thing is getting your certification and another will be troubleshooting your customer's machines and dealing with the customers. You need to establish a good reputation and that my young friend, may take years.
Yes, although the certification gives your credibility, nothing beats hard learned experience. Expect to make mistakes. You learn from them. Always fix your mistakes, and compensate the customer for the mistakes that you made. :)
One of my brothers became Network+ certified a few years ago. He is an electronic technician and he installs security alarms and closed circuit surveillance cameras. More and more security systems are linked to networks, sometimes he only has to connect from his home to troubleshoot his accounts' security. One other of my brothers, the youngest, is studying for his Network+ certification, and he is one year away from finishing his Computer Engineering career. By the way, I am the oldest of four brothers and two sisters. My children are teenagers like you. That gives you an idea how ancient I am.
darman12 (author)  blkhawk1 year ago
Wow, you are kind of old, haha! Not really though, probably not much older than my parents. That is cool that your family is so into technology. My brother is kind of interested, but I am definitely the nerd/geek of our family.
darman12 (author)  blkhawk1 year ago
Wow, you are kind of old, haha! Not really though, probably not much older than my parents. That is cool that your family is so into technology. My brother is kind of interested, but I am definitely the nerd/geek of our family.
darman12 (author)  blkhawk1 year ago
So does CPU and processor now mean the same thing?

This is somewhat of a tangent, but you might be interested in how Apple designs their laptops. In the macbook air (and I think in the pro now) the RAM chips and chips from and SSD is integrated right onto the motherboard. That is how they get them so small. In the macbook pro I think they have a normal SSD still.
Yes, it seems that the CPU functions that were performed by a number of other microprocessors and integrated circuits are becoming more and more centralize in a processor. I did not encounter too many Mac computers since they are a close architecture with a proprietary software and hardware. I worked mainly in PC computers,
darman12 (author)  blkhawk1 year ago
Ok, I will try to fix the Instructable soon. I am good friends with my teacher, I will ask him about it; if he didn't know it will be a good thing he can share with us. Thank you for the book suggestions! I am sure I will enjoy them. This class is designed to prepare us for the exam, only one person didn't pass it last year...so I am sure I will be well prepared. I might also suggest these books to him.
darman12 (author)  blkhawk1 year ago
But you must agree with me; it is kind of funny that some people call computers a CPU...one time somebody brought up a computer into our classroom to fix, it had a sticky note that said, "CPU needs a new hard drive" We had a good laugh about that!
Some people called the computer case a CPU! You are right!
darman12 (author)  blkhawk1 year ago
I wonder where people get that misconception. I guess cp kind of leads people to think computer.
darman12 (author)  blkhawk1 year ago
Also, does Intel only manufacture processors then, not CPUs?
Exactly!
darman12 (author)  blkhawk1 year ago
Haha, I looked at that same Wikipedia article earlier. Was my description of the CPU correct?
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