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Post originale di: randy3833 ,

Titolo:

Why is the RAM not recognized?

Testo:

I just installed upgraded RAM in a family member's MacBook. At the same time, I installed a new SSD and was starting up with an install DVD from the optical drive. I received the 3 tones repeatedly.

Tried reseating the modules, checking to make sure that I had the correct modules, reinstalled the old modules and have the same 3 tone result. Weird! I tried the individual slots, one module at a time with the same result.

There was some controversy on the iFixit procedure about wether to disconnect or not disconnect the battery before working on the Macbook. I opted to disconnect the battery and that seems to work fine, so am thinking that is unrelated.

I also tried resetting the SMC and PRAM with the same results.

Any thoughts on this???

Thanks,

Randy

Dispositivo:

MacBook Pro 13" Unibody Early 2011

Stato:

open