Re: Unix machine re-boots at random


"FrankS" <fshank@xxxxxxxxxxxxx> wrote in message
news:qau%f.69466$dW3.30457@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
This machine is my current server that will soon be replaced, but, would
still like to fix for a backup. PII 400MHz. My problem with this machine
started last Thursday with a "PANIC" error message. From my past experience
with this I replaced the 128 MB of memory and replaced it with two 256 MB
sticks. When I plugged the machine in there was nothing, no power. I got a
new power supply, and it started up. Thought everything was fine.

This machine has been running 24X7 since 1999 and has never had so much as a
hiccup. Now, it could run for 8 hours straight or as little as 30 min. It
just re-boots without any delay between boots (as if the reset button was
touched). Something may have gone wrong when I turned it off and let the
machine cool down for a day while getting the new memory.

Does anyone know where the most likely place for this problem is?

If this is a Slot 1 CPU, there's a good chance the CPU retention mechanism
is not doing its job, and the CPU is experiencing occasional electrical
interruptions, causing it to reset & reboot the system. Use a can of air
duster to clean the fan, heatsink & socket while you're at it.

In addition to Bill's suggestions, go to www.memtest.org and download
the latest version 1.65 of memtest86+, a fairly thorough, non-O/S dependent,
standalone memory testing program. Let it run for several hours and
see what turns up. (And no, the POST memory test isn't sufficient.)

Bob


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