Portege 7220 - memory not recognized

My Portege 7220 old does not recognize that there is a memory module. While my other 7140 just works very well with a RAM of 256 MB module. I tried my 64 MB module in the 7140, and it worked fine.

I also tested the RAM of 256 MB of the 7140 module in my 7220, but BIOS still showed that there are 64 MB of RAM.

So, what could be the problem with my 7220 and the extra RAM module?

(Also the cover of the section of memory is missing, but I just put coverage on another laptop on it.)

Slot's memory may be defective?
I can't remember how many slots that old Portege Hat but I assume there are two of them.
Have you tried to test both of them?

Tags: Toshiba

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