TP 560 Memory upgrade problem

[goerg200d]

I'm trying to add memory to my 560 laptops (2640) and have the folowing problem.
The memory is not seen by the system.
I tryed on two different mother boards and with two memorys (32mb nad 64mb) with the same result.
Both motherboards' tests and memory tests are fine.
There has to be a trick ... (but its not menschioned in the IBM manual).

Please help.... I know its an ald piece of hardware but I stil need it.

[SeanM]

No tricks. What kind of dimms are you using? Which 2640 do you have?

[goerg200d]

Thanks for your reply.

I have two laptops:
1. Thinkpad 560 - 2640T95,
2. Thinkpad 560e 2640-300

I tested both of them with:
1. IBM 32MB 66Mhz 3.3v FRU 42H2819
2. Kingston 64MB - KTM-TP770/64

The same result. When is start them the memory counter does not show the upgrade.

[JHEM]

The memory you have will not work with your 560 series machines, both of which require EDO memory.

Regards,

James

[goerg200d]

So these memory are dimm type? Right?

I did not know there is edo memory that would fit to my laptop. I'll try to find one.

[JHEM]

http://www.kahlon.com/rn3879_IBM_ThinkP ... ,4xU).html

Regards,

James

[goerg200d]

@James
Thanks alot for your help. It seems I really need EDO.

Best Regards

George