I have the above running on XP. It had 128mb pc 100 Toshiba ram in slot 1/a and 256mb hynix ram in slot 2/b, so was working perfectly ok on the combined 384mb. I decided to be clever as i want to learn more about upgrading RAM, so I removed both RAM modules.
However, after replacing them I can only get the factory fit Toshiba 128mb module to be recognised. I have tried swapping them round, trying the Hynix only (the laptop did not seem to want to poewer up though)and the Toshiba module only. No change, whatever permutation it will only recognise the 128mb module. I know don't know whether the Hynix module is the culprit for some reason - it was working ok!)-if so is there any way of testing the module?? or do I have to reset the bios or similar to recognise the Hynix module - advice appreciated