I’ve taken the side panels off but it still happens so it shouldn’t be a heat problem.
Actually, that will probably make your heat problem worse. Your case should be designed to move air into the front of your case and out the back (I suppose it could go from back to front, but most don’t). Taking off your side panels actually inhibits this air flow, and the heat from your machine ends up just “hanging” around.
Since your computer freezes during loading and randomly shuts off, there are about a billion things that could be wrong. If all your fans are turning properly and your CPU heatsink is positioned properly, I suppose you’ll have to go through the checklist of things that could be wrong. In order of the way I like to test things:
- Reformat your machine. Totally wipe it clean and then install. Also, make sure you don’t have a boot sector virus.
- RAM, first try reseating your RAM and then try different RAM
- CPU, first try reseating your CPU and then try a different CPU
- Power Supply, you could try a new power supply
- MotherBoard, if all else fails, you might have a bad mobo
It would be kind of hard for a normal person to test some of these things (I mean, who has an extra CPU laying around?), so you might have to take it to a professional.