Computer freezes after 4 minutes in Vista!

[j0akim]

Hello.
I'm really in serious trouble and I don't know what to do.
Recently, my computer started freezing after 4-5 minutes in Vista. It start up perfectly, but after 3-4 minutes the computer just won't respond. The HDD light is on for around 5 minutes and then, it just turn off. I tried to let the computer stay on overnight, too see if it would unfreeze, but nothing really happend. Right now i sit in safe mode, on the computer, so I guess it's not overheating.

My computer is this one:

Intel Core 2 Duo 1.66 GHz
Intel 945GM Chipset
1024 MB DDR2
120GB SATA HDD
NEC DL DVD-RW
Intel GMA 950 graphics with shared memory
12.1" WXGA - 1280x800
Intel 80281G High Definitio Audio soundcard
Ricoh Co Ltd R5C822 4in1 card reader
IEEE1394 port
4 USB 2.0 ports
Intel ProWireless 3945 wireless card
Intel Pro/100 VE ethernet controller
Bluetooth v2
DVI output
S-Video out

Please help me.

 

[eztrog88]

check your temps to make sure it's not overheating. Turn the system on, enter BIOS, check system health for you CPU temp, if it rises sharply over 70 degrees C then something is wrong with the CPU/heatsink.

If not, I would reformat and try a fresh install of Vista.

 

[meanman]

check the temps but before you go as far as reinstalling vista post a hyjackthis log.