From: Adam Quantrill (aquantrill_at_scigen.co.uk)
Date: Fri Jun 11 1999 - 05:08:58 EDT
Yes I have - I have an IBM DIMM and DIMM adapter on a 755C. Originally everything was fine, but after a spell in Australia when I left the machine on continually in 30 degree heat, the memory went bad. Now it recognises the total of 20MB is there, but gives a parity error in the expansion memory and marks it as unusable.
Perhaps the electrical spec is marginal - I'd go for the highest speed chip you can get to be on the safe side.... or take your machine down to the local computer shop and try a few until they work if possible!
- Adam
P.S. It's worth it to get the 20MB on, windoze actually runs at a respectable speed.
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Subject: Thinkpad 755c
Author: MIME:Roberta J Lippse <rlippse_at_U.Arizona.EDU> at INTERNET
Date: 10/06/99 23:45
I have a thinkpad 755c, and am trying to install the dimm adapter and dimm chips insead of the IC dram card. It refuses to recognize the memory as usable, even though I have updated the flash bios, etc. I have reloaded the entire machine from scratch 4 times, so that is not it. It recognizes that the dimm memory is there, it just doesn't see it as usable, with or without parity check. The memory was from Simple Technology and I'm sending it back and getting some kingston, because IBM brand is way too high for such an old machine.
Has anyone else came up with this type of problem before? If you have, please give me some insight, before the same thing happens with the new memory.
Respectfully,
Roberta Lippse
Support systems Analyst
UofA
Department of Psychiatry
Tucson, Arizona
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