Problem with 256MB Kingston RAM / CPt C400

Hello,

 

I have one problem with my Latitude CPt C400GT.

My Notebook have 128MB RAM insert. I want upgrade the system with one Kingston KTT-SO133/256 RAM.

The RAM have a PC133 timing. The insert RAM in Bank A have a PC100 timing.

 

An now the problem:

I insert the new RAM in bank a and the system did not start. The display ist still blank an the hdd did not start. After one minute the system shut down.

 

If I insert the memory in bank b and the old pc100 ram into bank a the system start, but the memory did not work and I have only 64MB.

When the bios during the post, I have this error message: "Memory write/read failure at 04002000, read 000000000 expecting 00EF00EF"

 

 

 

System details:

Dell Latitude CPt C400GT

Bios Revision A14

Intel Celeron 400

Insert Memory: Kingston 64MB PC100

New Memory: Kingston 256 MB PC133

 

 

I hope you can help me, please :-)

 

Regards

Lars