[drharvard]

Hello everybody, I've been reading and browsing these forums for some time now, however I just recently registered and this is my first post.

A couple days ago I purchased a new PC after researching for a couple of weeks. I made the purchase at Newegg.com.

Intel i7 Bloomfield 3.06 with Zalaman Heatsink
ASUS Sabertooth x58 Motherboard
Corsair Dominator PC16000 RAM (3x4GB)
Gigabyte HD 6850 GFX Card x2
WD Caviar Black 1TB 7200 RPM HD
Corsair CMPSU 850TX

I have 4 120mm fans, a CPU fan (Zalman), a RAM heatsink fan, and 1 large fan (it's about 8 inches in diameter)

When the parts came I put the PC together and checked that it would boot. After POST I ran MemTest and had 0 errors after several scans. I figured everything was good so I installed windows (7 home). Shortly after installation completed the computer crashed. This happened while updating drivers and windows. It happened several times, sometimes while doing nothing. I used HWMonitor to watch the heat of the machine, nothing was breaking 45.

After some research I thought it might be poor auto settings in the BIOS for voltages. I altered the CPU voltage to 1.3 and the RAM voltage to 1.65 (the reccomended for the RAM) and the crashing started happening less often. I noticed the video cards were running at about 25 degrees so I changed the voltage there a little too. After that I entered windows and it seemed to be doing great. I got some games installed and played for several hours watching the temps closely. Under very heavy load nothing was over 75 degrees. At this point I figured everything was now fine.

After doing a little testing and not having any problems I decided it was safe to OC. I bumped up the CPU to 4.03. I hardly adjusted the RAM and video card speeds. I did some more testing and everything passed. No crashes, no overheating, while under heavy load no temps reached anything over 75.

Today, about a week later, I have been experiencing the problem again but rarely. When it would crash the temps would usually be around 50. This is why I am not sure what to do next.

I thought it might be the video card so I took them both out and tested one at a time. It turns out that one was not even working at all. I tried both the PCIEx16 slots. The other was working fine in either slot. I thought that might be the problem so I boxed it up and am going to RMA it. I disabled the Crossfire settings also.

Today while playing some games after several hour the computer crashed. Before crashing the Monitor lost signal but I could still hear the game sound around me and my friends talking on vent. Again when this happened the temps were about 50 all around, All 4 cores and the 1 GFX card.

Might this still be a GFX card issue? Or maybe a Mobo issue?

If anyone could help me out it would be appreciated, thanks!!!

[benny428]

Hmmm........ try turning down your CPU Voltage. I noticed that you said you had it set at 1.3, and it was running just fine. The way I look at it "Why fix something thats not broken?" Lol, but on a serious note, try during down the voltage. That should help you.
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OS- Windows XP Media Center Edition 2005
PSU- Thermaltake Butterfly PurePower 480W
CPU- AMD Athlon XP
MOBO- ABIT NF7-S
HDD- Western Digital 120 GB IDE
VidCard- ATI Radeon 9000
SoundCard- RealTek |HD| Audio