computah haet mouse

After a format my computer decided it would be fun to randomly stop recognising my mouse. If I take it out then plug it back in again it will work again for a few more minutes, then crap out again. I know its not just the one mouse because it happens with another one, both USB. Also they worked fine before the format. Everything on the interbutts makes vauge references to hardware problems ( drivers are good ) but everything seems to be working fine after the format. No idea what to do so I figured I'd ask if anyone had a similar problem and what they did.

tl;dr  mouse randomly stops working. Halp.