600E memory problem

[rogermagic]

i bought a new low density 256MB pc100 ram for my thinkpad 600E model 2645-5JU, when i turn it on, all the memory installed appears, but it's unable to boot, it makes a sound and does not boot............any ideas?
I tried a 128 mb pc66 ram, which was previously working, it's also unable to boot....
i tried a toshiba pc100 ram 128mb, it boots but only recognizing 93MB (out of 32 on board and the 128)............

Any ideas will be helpful, maybe if i disable the onboard 32mb ram it will be able to boot with the 256MB?

How do we disable the onboard ram?

Any input is highly appreciated.

[rkawakami]

Have you tried booting with only the built-in memory? There is a way to disable the internal memory via an edit in the BIOS. Try searching the archives using the following terms and limit the search to the 770,600/570 forum:

disable memory hex edit

At the moment the search function seems to be down.

[warwound]

This will save you time searching...

To disable onboard 32MB memory:

F1 to enter BIOS.
Select Config.
Press Ctrl-D to open BIOS editor.

Byte 2B

Default is 80

Change to 81 to disable onboard 32MB memory.

I tried this myself on my 600E 2645-4BG and it definately works.

warwound.

[rkawakami]

This will save you time searching...

Thanks for that! The search function still appears to be having some issues.... I just tried again and I keep getting the SQL errors.