Dell Optiplex memory issues

[IttyBitty359]

Hello Toms Hardware!

I recently acquired a used Dell Optiplex 755 with 4 GB of Kingston memory (2 GB of 2 dimms of KVR800D2N5K2).

I replaced it with 8 GB of Kingston memory (2 GB of 4 dimms of KVR800D2N6).

When I plugged in the computer, it went thru its self test but stopped with just the power light on (green) and I could not turn it on (no post followed). I quickly removed the memory and put back the original 4 GB and was able to turn it on with the post coming up fine.

My only question is that does going from CAS 5 to 6 cause the problem or is the memory just bad?

Thanks in advance.

 

[IttyBitty359]

Found the solution, when I inquired about the memory, I discovered that it was AMD type memory. Hence the reason that it would not boot on the Intel 755 motherboard.