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PC randomly restarts

I'm in a bit of pickle with my new computer. It keeps shuting off and restarting for no reason, after turning off the auto-reboot option I keep getting BSOD'd. Normally with the generic error message. However the last two times I kept getting a BSOD with BAD_POOL_HEADER on the 3rd or 4th line down.

I've been told it could be a number of different things wrong with it. Overheating, bad mobo, faulty PSU, bad RAM etc. I've checked the mobo for defects and bad capictors and they all seem ok. Its had a fresh install of Windows XP pro, I did a memtest and after about 2 hours it came up with 2 errors with the RAM. The CPU temps according to Speedfan are running at 36-43'C depending on load (this is with the side of the case off and a small deskfan blowing inside the case). With the side panel placed back, core temp 1 and 2 were into the 40s with a little red arrow pointing up. Its got a stock AMD heatsink and fan on it, however the case has no fan on it. The actual PC is about 4 years old but its new to me.

The specs are:

AMD Althon 3500+ (2.2Ghz 64bit)
Asus motherboard (dont know the model)
Nivida GeForce 5700
2 Sticks of 512mb ATL RAM
Maxtor 80GB Hard Drive
Windows XP Pro
230V PSU (dont know the wattage)

Can anyone help?

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Just checking.

In reply to: PC randomly restarts

Is the case cover off and the dust bunnies moved out? And with the cover off and that fan there, did it still reboot?

Also, since it reboots I wonder if you can tell us the 10 or so drivers you installed after you installed XP. It's not unusual to find a driver that was forgotten.

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thanks for replying

In reply to: Just checking.

The case has been cleaned out, it has restarted on a few occasions with the side off and a fan blowing into the case.

the drivers that were installed, the CD-rom and DVD-RW drivers were installed I think, the graphics card driver, mobo driver, Wireless card driver. Thats all I can remember,

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The ones I'd look for next are

In reply to: thanks for replying

The chipset drivers. Notice the first 3 drivers are all about that at

If you can supply the make, model of the mainboard I might find these.

Also, my kids older machine continued to reboot oddly (rarely) for months until I figured out it was the audio driver. You can test for that by disabling the onboard sound.

One last thing. Did you refresh the CPU heatsink "compound"? I would.

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motherboard model

In reply to: The ones I'd look for next are

Where would I find the motherboard model. The motherboard is made by Asus.

In reguards to the heatsink, I have reasons to suspect this as it was kinda dusty before I cleaned it. I havent got any thermal paste so I cant take the heatsink off to see.

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Another idea

In reply to: motherboard model

I have an AMD 64 socket 754 system and my random reboots ended when I moved some USB things off the onboard USB connections. That was my clue a driver wasn't quite right. Oddly the PCI USB 2.0 card that I moved them to worked fine.

OK, how to identify the motherboard. You have the visual method and you can try BELARC ADVISOR and the free version of EVEREST.

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a dodgy driver then?

In reply to: Another idea

I do have a usb 2.0 card plugged in but not installed. could this be the problem?

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(NT) Tip: Unplug things not used.

In reply to: a dodgy driver then?

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usb card

In reply to: Tip: Unplug things not used.

I've removed the usb card, going to find out what the mobo model is.

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board model

In reply to: usb card

ASUSTeK Computer Inc. A8V Rev 1.xx

From that Belarc system scanner thing. I think it might be a bum card because I have taken that USB card out and so far no restarts.
Temps are at 40-43'C

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Then don't fix it...

In reply to: board model

Someone told me that.

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