Strange problem, Locking up...

28 Oct 2002
Hey guys, hope you can help me with this one...

Right a built a machine using OCuk for all the bits (Naturally) Just over a year ago for my mates family.

Intel P4 3.0Ghz
P5P800 Motherboard (Bios Flashed to latest version)
1Gb of Dual Channel Ram
Antec Sonta / 380w PSU
Asus Geforce 6600GT AGP 8x Graphics (Now with Zalman Cooler on)
Sound Blaster Audigy 2 ZS Plat With front drive

The Machine is normally left on 24/7 and all has been going well for the last year. However now the machine has developed a strange fault. If the machine is left on 24/7 it will lock, normally on the windows screen saver if not in use, however it also locks if someone is using the PC, such as sufing.

Ive tested it, if I boot up the PC 8pm and leave it on until i get up in the morning for work, its fine, however once I come back from work (6pm) the machine has locked?!

Ive tried new drivers for motherboard, Graphics card, Flashed the bios, New drivers for sound card, updated windows... The list goes on.

Ive also relaxed the RAM timmings and still the same. The machine works perfectly until it locks. Which is you cant do nothing other than to reset.

Anyone have any ideas?
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