more specifically, did you re-use that hard drive or is that a fresh installation?
I'm thinking perhaps the motherboard software was not installed correctly. A new motherboard generally needs a new OS install, or else you'll get all kinds of driver issues. If you did not do a new installation for your new hardware, the best answer would be to download the drivers, put them on a backup(usb?), re-install windows, and then run the motherboard drivers.
New build, all new parts, fresh Windows 7 install. I did not purchase a cd-drive, so I had to download and install the drivers manually off gigabyte's website. I believe I got them all, but I will check again tomorrow.