Thanks for your thoughts. I've done all you've suggested - unfortunately, to
no avail. BIOS / settings acknowledges all memory installed (512 when I add
the 2nd module). However, as I said, with a second module the PC won't boot
(except in safe mode). Note: There is a slight 'clunk' sound coming from my
hard drive when the boot fails. I assume that's to be expected.
So far as my event logs are concerned, here's what I have:
System Errors (since March 7; that's all the hsitory I have) - most every
day two errors appear: 1) service control manager (7001) "the service cannot
be started", 2) DCOM (10005) "the service cannot be started"
Application Errors (since April 28) - VSS and event system, both probably
related to safe mode starting
BIOS System event log on 9/17/2004 (the day after SP2 installation) -
"memory size different; memory decreased". No other significant message here.
Any new thoughts? If no simple solution comes to mind, what about an SP2
uninstall / memory reinstall / SP2 reinstall sequence?
:
:
Discovered 256 of 512mb memory 'missing' from Dell Dim8300. Can't 'reinstall'
or add memory; system won't boot (in normal mode). Can only run 256mb (any
one module in any one slot). However, safe mode boot recognizes all memory I
try to install. Diagnostics show everything OK. Discovered that 'event log'
showed memory change (from 512 to 256) day after SP2 install several years
ago!! BIOS upgrade didn't help. Can you???
Try to reset the Memory cards in their slots and clean the dust there with
Anti-static Air compressed can or blow it gently from the case and Reboot
your machine.
Look in the Event Viewer and see if there is a record error that can shed
some light on the memory killer and make sure the machine is clean from
malwares and virus.
Run Disk Cleanup and Defrag in safe mode
Check the BIOS are they recognised there as 512MB.
HTH.
nass
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