Need help

Im having a problem with this cpu I built last year. Ocassionally I get a bluescreen error when I use it normally. But when I try and run a labor Intensive program or video game it crashes and gives me a blue-screen error. When I run prime95 it gives me these results

[Wed Sep 02 21:54:09 2009]
FATAL ERROR: Rounding was 0.5, expected less than 0.4
Hardware failure detected, consult stress.txt file.
FATAL ERROR: Rounding was 0.4956054688, expected less than 0.4
Hardware failure detected, consult stress.txt file.
[Thu Sep 03 19:29:27 2009]
FATAL ERROR: Rounding was 0.5, expected less than 0.4
Hardware failure detected, consult stress.txt file.
[Thu Sep 03 19:35:16 2009]
FATAL ERROR: Rounding was 0.4992675781, expected less than 0.4
Hardware failure detected, consult stress.txt file.

Only thing I can think of is reformat my drive and see if that solves it. Heres a little information about my system

ASUS M2N-SLI Deluxe AM2 NVIDIA nForce 570 SLI MCP ATX AMD Motherboard
OCZ StealthXStream OCZ600SXS ATX12V / EPS12V 600W Power Supply
AMD Athlon 64 X2 5200+ Brisbane 2.7GHz 2 x 512KB L2 Cache Socket AM2 65W Dual-Core Processor
Ocz Platinum 240-Pinn DDR2 800 (PC2 6400) Dual Channel Memory x 4G
EVGA 512-P3-N890-AR GeForce 9800 GTX+ SSC Edition 512MB 256-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card
ZEROtherm Nirvana NV120 120mm 2-ball UFO Bearing / Transparent CPU Cooler
Antec Nine Hundred Black Steel ATX Mid Tower Computer Case
Creative 70SB046A00000 7.1 Channels 24-bit 192KHz PCI Interface Sound Blaster X-Fi XtremeGamer Fatality

I will appreciate any help from someone that is a little more knoledgable than me. Thank you

[Mini-Geek]

Originally Posted by chadwin405

Only thing I can think of is reformat my drive and see if that solves it.

I find it extremely unlikely that that will fix the problem. I wouldn't recommend you do that.

Originally Posted by chadwin405

AMD Athlon 64 X2 5200+ Brisbane 2.7GHz 2 x 512KB L2 Cache Socket AM2 65W Dual-Core Processor

Have you overclocked the CPU and/or memory? If so, try dropping them back to stock speed and see if you still fail the stress test.
What sort of CPU temperatures are you getting while idle and while under stress? You can use SpeedFan to check. http://www.heatsink-guide.com/conten...=maxtemp.shtml says 65 C (149 F) is the max operating temp for a CPU like yours.

If you're running at stock speed with low temperatures and still failing, you might just have a defective CPU.

[Prime95]

Originally Posted by Mini-Geek

...still failing, you might just have a defective CPU.

or defective memory

or possible, but unlikely, defective motherboard or power supply