Constant reeboots, bad hd,psu?

[goose13]

I put together a system about a year ago and it's been trouble free for the whole time till about a month or so ago. Randomly my system will just reeboot on its own. Black screen and then the lanparty startup screen. All my temps are within normal parameters. I dont think its my vid card overheating only because I could be surfing the net and it'll do it, not only playing games.

Any and all suggestion would be appreciated.

Ryan

System specs
DFI LANPARTY UT nF4 Ultra-D Socket 939 NVIDIA nForce4 Ultra ATX AMD Motherboard
AMD Athlon 64 3500+ Newcastle 1GHz FSB Socket 939
CORSAIR XMS 1GB (2 x 512MB) 184-Pin DDR SDRAM DDR 400 (PC 3200
Seagate Barracuda 7200.7 ST380013AS 80GB 7200 RPM Serial ATA150 Hard Drive
Creative Sound Blaster Audigy 2 Value

 

[diduknowthat]

what psu do you have? What are the amps?

 

[goose13]

Knew I forgot something. Its an Antec Neopower 480w. It's 12v and if Im reading the box right its 8amps.

 

[diduknowthat]

you're reading it wrong =) lol, it's got 34 amps on the 12+v rail. That's plenty of power for his system so the psu shouldn't be causing the frequent crashes. And what graphics card does he have?

 

[goose13]

Figured 8 was wrong, thanks for the info. Im using an Evga Nvidia 6800gt 256MB with an Arctic Cooling NV silencer.

 

[joincamp]

i had that kind of problem with my nforce2 board before. eventually i narrowed it down to the dual power system daughterboard. is it sensitive to vibrations/movement? can you reproduce it somewhat on command? if so, try stripping everything down to barebones and work from there.

 

[goose13]

I can never reproduce it. I could go all day without it happening or it'll happen 4-5 times a day. And it happens mostly when I play games like World of Warcraft of BF2, which is why I thought the card was over heating, but it does it just when Im listening to winamp or just web surfing. I have a tool called nvmonitor that came with the vid card that monitors heat and such. It does have 3 voltage monitors that are CPU, Core, and Mem. Core voltage is in the red and the other 2 are in the green. Im guessing thats my video card core voltage but I have no idea how or whare to adjust that if you even can.