Okay so I put the processor back in and the problem seems to be fixed. I have no idea how, since I didn't do anything differently. Thanks for your time.
I believe you misread. It is stating that DDR3 only works with an AM3 processors, not that AM3 processors can only use DDR3 RAM. AM3 can still use DDR2 memory.
Anyway, I will wait a bit for any other answers before take it to a shop, since the closest one is pretty far away. I'm hoping that the...
I recently got a new processor and a stick of 4GB DDR3 RAM to replace my old Athlon 64 X2 processor and 2GB DDR2 RAM. However, when I powered on my computer, it wouldn't POST, and gave no beeps. I'm hoping that the CPU isn't defective, but it seems like something about it isn't functioning...