Ok, I have read everything, I have tried I think everything. Well I was cleaning my PC and I disconected everything, when I conected everything I powered up the PC and nothing came on, I hear the fan funning the CD wanting to bood the hard drive boot but then it stops. I checked the Diagnostic Codes and the A-B stay yellow and C-D stay green, it says is a Memory failed to be sized or enabled, now i added 4 RAMs cause I thought it would be the module, but still I get the same error, when I took the RAM out and I heard peeps, it was the following: 5-2-2-1 Unsupported RIMM device count/technology, I am not sure what is going on, the monitor stays black and with a yellow light and I get nothing. I NEED SOME ASSITENCE Please HELP someone....