formatting a hard drive

I am about to format my hard drive and install a clean copy of Windows 7, as I have pick up a virus that has spread through my system. including the root drives, registries etc of Wndows. Three days of trying to get rid of it using just about all tools that i know of, HitmanPro, TDSS, Ion etc has not solved the problem.

My question is does formatting and reinstalling Windows remove the virus, or will it still lurk on the hard drive itself?