PC freezing after beeing idle.

[-RockMan-]

It is a gygabyte 945gzm F2

Ok then, take your vga card out of your computer, next hook up the vga cable to your main vga port.
Turn on your computer and boot to windows, does it work fine ?
If so, reboot again and go into your bios, check system health and check the cpu tempo.

Tell us what your cpu tempature is.

 

[lucasfalves]

I use the hdmi port with the gpu card, i'll do what you suggested when i get home. Btw, i will upgrade my card to a gtx 570 this month, and my power supply thing (idk how it is called in English.) From a 250W to a 550W. I'll reply about the bios stuff a few hours from now or tomorrow. Thx by the current help.