You talking in this way Jolie, i start to think your problem is something hard to happens and difficult to solve, with sure i would try other things before buy a new drive.
About reinstall windows, i don't think this can solve your actual problem, but if is your last resort, you have to do it, cause you don't know what will happen if you don't try.
Try to use other H.D.(if some friend can let a H.D. with you) with windows installed in your machine, just for test, cause is more easy than you reinstall windows.
