PC Cutting Out

Zounds

For some time now my PC has been apparently randoming rebooting while I was away from it. At first it happened less than once a week so I ignored it but lately it's started happening roughly once in every 24hrs and it happened twice today. I've only seen it do it twice and what happens is simply the screen goes blank, the tower stops making noise and then a couple of seconds later the PC boots up again. Every time this happens I get the "Windows has recovered from a serious error" message and the last time it happened I got this message on start-up.

My first thoughts as to what could cause this would be over-heating or a power-supply problem but I have temperature monitors which report nothing unusual and it's happened with two different PSUs.

It's become quite worrying now and any help would be greatly appreciated.

The PC in question:
AMD Athlon 64 3200+ 2.0GHz Socket 939, 512KB
Asus A8N-SLI, nForce4 SLI, Socket-939 ATX, S-ATA, GbLAN, Firewire,DDR,PCI-Ex16
Club3D ZAP-TV1100 MCE Tv-Tuner Multi PAL Philips MK3 PAL/Secam, HW MPEG2 Encoder
Corsair XMS3200C2 DDR-DIMM 512MB PC3200 32Meg x 8, CAS 2-3-3-6-T1, 400MHz, 6ns x2
Maxtor DiamondMax 10 300GB SATA 16MB 7200RPM
Sapphire Radeon X800XL 256MB GDDR3 PCI-Express,Ultimate Edition,Full-Retail
LG DVD±RW burner, GSA-4167RBB, 16x, Dual

Thanks

Ruu_Old

Try running Memtest and see if it brings up any errors.

Ziycon

Could be a damaged harddrive or faulty motherboard!

Cuddlesworth

I would start with ram, then hard-drive, then motherboard.