New PC Built - USB Mouse Issue

[-XawnL-]

Hi, im fairly new to the forums and hoping someone more knowledgable than myself might be able to help me resolve my current problem before i give myself an aneurysm. Ok i just built my first pc with parts from newegg. The build consisted of:

Gigabyte ga-ma770t
AMD Phenom 710 cpu
WD 500gb Black HD
Crucial DDR3 Ram
Corsair 400w single rail psu
Sapphire 4850 512mb Vapor-x video
Sony DVD Drive
Lancool K7


The build went off without a hitch for the most part. Installed XP Pro SP3 and everything is running great except for 1 vexing annoyance that i cant seem to figure out; I can't get my mouse to work via USB port!
I have checked the bios and enabled USB for keyboard and mouse. I have my keyboard plugged into a USB port and it works just fine. Its only the mouse that wont work for some odd reason. Luckily my mouse came with a ps2 adapter.

So now im wondering if there is a compatibility issue between the gigabyte chipsetset and XP Pro 32bit or?

Would really appreciate it if anyone had any thoughts on why this is occurring or what i might do to resolve this pesky little problem as its the only thing keeping this from being a flawless build.


Thanks alot