Windows 7 - RAM/Dimm slot issue.

As the title suggest, my motherboard seems to have an issue reading memory. I have 2x2gb sticks and the computer will not boot unless a specific stick is in the A1 dimm slot. The computer refuses to boot if that same stick is in any other slot and when placed in the A2 slot a beep message indicating I have no memory installed occurs. The other stick seems to not work in any slot including A1 and the computer will only boot with two sticks if they're in A1, A2 but still only reads 1 stick.

This problem arose after I installed a Hyper 212+ cooler. I have read of similar issues due to the instillation being to tight and remedying it by loosing, however I loosened it and the problem still persist. I fear I might be too late and the damage has been done. I do need all 4gb to be accessible so any help or advice is welcome.

As for the memory itself, the stick that can boot with the computer reads no error, yet it still only works in that slot. The other stick I received after an rma of a previous one. I can assume the stick works fine, but I can't test it.

I have also updated my bios to the most current version.

Sort of the same thing here,

Asus X58 + 6/12GB memory overclocking - detecting less memory than installed - i4memory.com - different look at memory

lots of different troubleshooting tips to try.

Thanks, I'll check it out.