System is very glitchy after installing new motherboard

childofthetao

TS Booster
Hi, I just installed a gigabyte ga-z77x-d3h into my system (i5 3570), and even after reinstalling windows the computer is very glitchy, it takes ages to come on, freezes, and usb devices don't work half the time.

I'm thinking it's a dodgy motherboard. Any ideas?
 

childofthetao

TS Booster
Actually my first post was wrong, (this is someone else's computer) reinstalling windows fixed the glitches it just pauses on the windows logo for about five minutes before booting up.