If you're using your old boot drive, it probably doesn't have the correct chipset drivers installed. It's recommended that you do a clean install when switching motherboards unless it's the same make, model, and revision.
Could it be my PSU causing this? Its a 580W but was told its very cheap and doesn't actually produce that amount. I have a 3 yr old 580w Hush from Casegears.
Phenom II 1055T
M4A87TD EVO Mobo
XFX 5770 1gb
4gb DDR3 RAM
500gb Western Digital HD
You may want to backup your drive in case it fails. Reallocated sectors aren't usually a good thing. If the drive is under warranty you can RMA it. Keep an eye on the count and see if it continues to go up. If so, it will most likey fail soon.
I don't think a weak PSU will cause reallocated sectors. It may however cause I/O errors or corrupted data.
Believe I know the problem. Not long before this happened I had used the TurboEvo that comes with the mobo to OC to 3.2ghz. As soon as I saw the problem I reset the OC back to normal and have not had anymore damage to my HD since.
I don't think so. Hard drives get their power from the PSU, not the motherboard. A bad OC can corrupt data but I don't think it will effect reallocated sectors. Anyhow, if the reallocated sectors isn't still rising, you should be fine.