[QUOTE=grenaaade;1959674]The fan is located on the top of the back of the computer.
And under closer investigation, it is running, but is very, very dusty.
The heatsink is pretty dusty too, I guess I’ll clean them tomorrow?
I noticed a red light is lit on the motherboard if that is any help…
It is the hottest inside the case, you can’t really notice it on the outside.
It freezes at random times, so it is probably overheating…
I’m just trying to install windows and it keeps freezing half way through.
The fan that is located on the top and back of the computer should be your power supply fan. I am not sure what heatsink you refer to as you have not posted here where the heatsink is located (If you are looking inside the power supply then it is just that…).
You should try and get as much dust out as you can…I take mine out in the garage and use an air compresser under (mild pressure) and use something to block the fans from turning(screw driver)…as I do not want to sping the fans too hard with the air…(hard on the fan bearings)
Unplug and turn off the box first before sticking any thing in the box…sometimes their is still power going to the motherboard unless it is unplugged from the wall.
Look on both sides of the video card for a fan also…if you have an add in video card.
Your problem could be heat, flaky hardware, or corrupted sofware (windows)…so I suppose the first step would be to get as much dust out as you can.
PS I do not know what the red light is on the motherboard…may be just a power indicator or maybe showing an error condition (Try to find in your motherboard manual or computer manual…if it has a red light the documation should tell you what the red light is for). Maybe some one here can help you on that…but you need to be more specific as to what your computer specs are so people here can be of more help.
One more point…You can run your computer with the side off (maybe even point a box fan towards it for more cooling…if it is then stable with the box fan blowing air on the components…you would know you are dealing with a heat problem. With the side is off…check severl time for fans turning…maybe you have one that runs/stops…then runs again…