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Computer keeps randomly rebooting!

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Last response: in Memory
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May 30, 2010 12:43:32 AM

And sometimes when I boot up, the screen would be filled with little white squares and everything locks up.

Here are the problems I'm experiencing.

1. The system randomly reboots and when I go into the event viewer, it says:

"A fatal hardware error has occurred.

Component: AMD Northbridge
Error Source: Machine Check Exception
Error Type: HyperTransport Watchdog Timeout Error
Processor ID: 0

The details view of this entry contains further information."

2. Sometimes when I boot it up, there would be a lot of white squares on screen and everything locks up.

3. There is a lot of random stutters when playing DiRT2. Everything would run fine, maxed, 60+, but it would randomly lock up for a split second, then return to normal, which is really annoying.

I don't think it is overheating because the temperatures seem fine. PII X4 955 hits 52C, GTX 470 hits 83C, HDD hits 28C, and ambient case hits 30ishC. All of this is on load while playing pretty intensive games like Crysis, DiRT2, and Bad Company 2.

Another reason why I think it's not overheating because I haven't seen it reboot when playing games nor were there any white squares all over the screen.

The problems only happen within the first few minutes of booting up.

Anyone know what might be the culprit?

Thanks!
a c 128 } Memory
May 31, 2010 12:08:05 AM

If your video is 83c, that's too warm, and might explain the artifacts on the screen. Your power supply may also be maxing out; please list the brand and specs, especially the 12v rail.
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May 31, 2010 5:00:37 AM

GTX 470 is known to get hot so I'm not too worried about the temperatures. My PSU is an OCZ 600w ModXStream Pro with 50amps on the dual 12v rails.

Just got off the phone with the EVGA tech support and turns out my PSU's 12v is too high. It's 12.468v which is out of the range of the GTX 470's 11.9v - 12.2v.
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