Modern PCs can easily consume upwards of several hundred watts of power to push as many frames as possible. With this power, comes a lot of heat which inevitably has to be dissipated somewhere.

So, I went out and bought a computer for my dad. However, the CPU fan wasn't working so I replaced it. Now, the computer keeps locking up. I think it might be because I have the fan blowing in the ...

It is safe to unplug the fan temporarily as long as you have autoshutdown enabled and at the lowest setting. Preferably unplug the thing at idle instead of full load. Also p4's will automatically slow ...