I have this problem too..
Windows XP Pro SP2 - all updates
AMD AthlonXP 1600+ on Shuttle AK31 Rev. 3.1
VIA KT266A Chipset, 512 MB DDR-266
Creative SB Live PCI, Network Card, TV-Card,
DVD-ROM, DVD-RW, 2xHDD, FDD, 1xUSB used,
Gainward GF5900 AGP
VIA 4in1-Driver 4.56
First I thought it was a problem about my ram, but
memtest didn't find anything. My next choice was
the power supply - a 300W one.. a new one is ordered
and iam waiting for it. Because of I have to wait for
my new ps I looked a bit around and the next thing I
suspected to cause the problems was the NoExecute Feature
of the built-in Windows SP2 Firewall. I switched it off
in the boot.ini - because the CPU doesn't have this
feature. No changes from this, but a good feeling to
know it's disabled
Problem: Machine Check: Regs (sometimes without Regs)
on every cold boot. Some crashes in unspecified situations
like listen mp3s and surfing the internet, using Trillian (ICQ,MSN,Yahoo) and so on..
Since I have changed the case to a Chieftec Big-Tower with
proper cooling abilities, I haven't had any crashes - hope this is going on this way. BTW, I don't think it's the best way to disable the MCA feature, but that's an everyone´s selfmade decision.
Results:
bad RAM - no
bad PSU - maybe for crashes, but not for Machine Check "Information"
bad CPU - no, everything was fine until SP2
bad VIA Driver - maybe, has anyone checked it with older drivers ? (to avoid the crashes and/or the Machine Check thing)
If I find any other issue to solve the problem, I will post it here.
@bo_bo: If you find no Event for this (i never did) it's an error that occurs in the hardware or in a high kernel level. If it is anything else, Windows will give out a BSOD/reboot, and you have the Event for a saved Minidump to check. AFAIK..
Best regards
mainhack