[TriLUG] Machine crash

[Daniel Zhang]

This may be off Linux but it is hardware related.  I have a Dell 
dimension 8200 running Win2000.  It had a motherboard failure two weeks 
ago and Dell replaced it.  Now it crashes several time a night.  I ran 
Norton Antivirus for about 30 minutes(and no virus reported on screen) 
then NAV crashed.  Sometimes Explorer is not accessible.  Machine 
crashes and reboots without any warning.  I ran memtest86(memtest86.com) 
and it reports some memory failures.  But when I called Dell support, 
they let me run Dell diagnose tools for memory test and it reports 
nothing wrong.  Dell tech support promised to call me back but never.  
Whom should I trust? memtest86 or Dell? Any suggestions?

Dell Dimension 8200 (2 1/2 year-old)
CPU: Intel P4 1.8 GHZ
RAM: 512 MB
Hard Drive: 80 GB

TIA,

-Daniel