I know what you mean. I had to re-install my OS over the weekend and it still hasn't settled down yet.
As I re-install frequently I have actually done a back-up image of the drive, after I installed the OS and loaded the basic motherboard drivers (chipset, LAN, USB3) I didn't load other drivers such as graphics or sound as they seem to get up dated so often. It does save me about an hour each time I re-install. Luckily, Windows 7 has a very useful back-up feature and, for a change, it is something that it works well.