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My laptop always overheats. It then gets laggy and freezes up. When that happens, I can't do my homework or browse the web and it stresses me out when I have to finish a homework assignment by a certain  time.

This fan solves the problem of an overheated laptop by cooling the system inside my laptop.

Materials:

-Fan from an old computer
-Electrical tape
-USB cord

Tools:

-Scissors

Step 1:

Find a computer fan from any old computer you like. (Suggested that it is from a broken computer because you don't want to take apart a new computer) Clean out all the dust from within the fan. Detach the fan from the computer with the scissors.

Get a USB cord. You can go out and buy this yourself or find one around the house. I found mine at home.

Step 2:

Shave away the rubber/plastic around the wires of the USB cord so that the wires within the USB cord are showing.

Step 3:

Next, attach the red and black wire from the USB cord to the red and black wire from the fan.

TAPE THEM TOGETHER SEPARATELY. Red with red and black with black. You do not want the wires to be touching each other because something bad can happen i.e. a fire or short circuit.

Step 4:

After each individual wire is taped together, you can now tape all the wires together so it is one.

Step 5:

Now plug the USB into your computer and the fan facing your computer's fan. The fan should now start up since electricity is being put into it from your computer.
Now, your computer will cool down and run much faster.

Step 6: Final Product:

Voilà. Your computer cooling fan is now done. No need to buy those expensive cooling fans when you can make one yourself!

Thanks to the bro for the help.
<p>Hi</p><p>Can i connnect 4 fans for that?and your idea is simple and good</p>
<p>Hi,</p><p>What i did is similar but a little different..</p><p>Short version:I used the laptop's original fan not any other laptop's fan..So one fan for cooling nothing external..</p><p>A little long version:</p><p>I was suffering from my laptops' shutdowns, freezes and mostly BSODs..</p><p>And yes , I opened up, cleaned the dust on the fan and its grills and again yes i also applied thermal paste..I tried many stuff (like formatting, changing bios settings of the fan -to always on, some softwares-)but they didn't help much and they all failed in the end, so after hundreds of shutdowns and nerve-recking experiences i decided to power up my laptop fan on USB, </p><p>Now it's always ON (it wasn't always on when i changed the bios settings, or maybe it was on but slow- bios update didn..'t change anything)and it's much faster now, therefore much cooler.Yes a little noisy (but not abnormal) but when idle the CpU temp is 40-41 degree Celcius(it was around 60s).</p><p>I have HP compaq nc6400 running Win 7</p><p>I just unplugged the fan cable, cut off the end, shaved off the cable, attached to a USB tip(with soldering and taping).</p><p>Good luck..</p>
this is a good way to NOT cool your laptop. <br>The principal is GREAT, the end product not so much <br>Let me 'splain. No, there is too much. Let me sum up. <br> <br>First, make sure you get a 5 volt fan(the fans inside a broken laptop should be perfect). 12 volt fans MIGHT work, depends on the fan. <br> <br>Second, you're going to be plugging in, unplugging, storing(possibly in a laptop bag) and moving that fan... Spend a little extra, and use some solder heat-shrink on the wires. It will pay off the first time it DOESN'T short out from loose tape, and kill your usb port. <br> <br>Third, DO NOT blow INTO the VENT for your laptop fan. You'd just make the over heating worse. Or a least it'll be worse, if you existing laptop fan works at all. You want to blow into the ventilation holes, if you can, or into the fan air intake, if you cannot. That way the fans are not fighting each other. <br> <br>Finally, follow step one, but begin by cleaning the laptop fan. If THAT is clogged and dirty, that may be all that is needed to return you to a non-overheating condition. If using &quot;compressed air in a can&quot; to blow out the dust, make sure to use a toothpick to immobilize the fan blades first. canned air can spin that sucker so fast it'll burn out the motor bearings/bushings.
meant solder AND heat shrink :-)

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