Will reimaging correct bad sectors on the hard drive?
I think that your diagnosis is probably correct, you have multiple problems. Fix the disk first. From your description, you have a hard drive that is either dying or nearly dead. The noise, the inability to download, etc. – all point to an unstable disk. You can reformat the disk and reinstall on the same device, but I think your drive is about to fail, and I would rather see you buy a new disk (they are very cheap these days) and simply do a new install on the new disk. Then, put the second (i.e. original) disk on the system as a second hard drive and copy your files over before the disk crashes entirely. Registry errors aren’t your main worry right now – there are always registry errors and freeware software like CCleaner can fix them. That’s something you ought to do, but it’s a red herring for the real problem, which is your hard drive. The loud buzzing noises that you’re hearing are probably the hard drive heads moving back and forth getting ready to do a head crash.
