I'm running windows 7 32 bit OS on an am2+ motherboard (a770de+ ASRock) with AMD Athlon 64 FX-62. I'm ugrading by simply replacing the chip to an AMD Phenom II X4 965 Black Edition Deneb 3.4GHz. No other changes will be made. At the moment I'm using the latest bios version my motherboard has available. Should I expect a need to reinstall my windows due to the hardware change (dual to quad core)? Or will the new chip be a quick replacement without much trouble?