New System P4PE - Spontaneous Reboot Question

[Lagartija]

I have been having problems with spontaneous reboots since I put this
system together 3 months ago. I'm running XP Pro AND have disable the
option in system recovery to not reboot on error. Searching around on
this problem on the internet there is a seemingly general feeling that
this behaviour is due to some faulty hardware. I do monitor the PSU,
CPU and memory so from what I can see they are all working properly.

I wonder if it's video related because I changed the color bits from
32 down to 16 and that seemed to give me less reboots. I also notice
that at times if I'm scrolling (using the mouse on the right side
scoll bar) it will reboot, often not though.

The last thing that perplexes me which I can't seem to find any
information on is XP Pro services and recovery options. If you know
XP you know that each service has a recovery option, except for 4-5 of
them which offer no recovery service but "restart system". So I
wonder if these overide the option to not reboot system in system
recovery.

There are never any event log events recorded during these reboots.
So, while I hate to think it maybe the case I do wonder if there is a
glitch in the motherboard.

Well if anyone has any insight or useful suggestions to the above it
would br greatly appreciated.

Lagartija

 

[Gary Hegan]

Size of PSU and what brand.

 

[M]

My cable modem connected via USB causes instant reboot when browsing.

When I connect the modem thru LAN everything is OK.

Obviously something to do with USB 2 cause it works fine on computer with
USB 1 & Win 98SE.

Neither Motorola or ASUS were any help!

P4P800 D
P4 3G 800 FSB
Kingston RAM
Win XP Pro SP1

Murray

 

[Jim Morgan]

Size of PSU and what brand.

What does the power supply monitor report for the 3.3V output?

Jim

 

[Lagartija]

What does the power supply monitor report for the 3.3V output?

Jim

It just went from 3.392 to 3.408 but then back to 3.392 range.

One thing I noticed is that changing the color quality to 16 bit
lessened the reboots. Today I took a look inside the computer, pulled
the memory out (Corsaid) and the video card (to get to the memory).
Anyway when I booted up..the color quality was back to 32 bit.
Everytime it booted into windows it did a reboot. Finally I was able
to catch it and set it back to 16 bit. It's been a few hours with no
reboot. I made sure there was no leaking capicators and switch the
slots the memory was in. I can't go and get another stick to test it,
but my guess is it's not the memory.

Lagartija