|Most repairs you can perform from an installation disk you can perform from a Windows 7 Repair Disk that you should have made when the machine was new. If you did not then you still can make one from another Windows 7 machine as long as both are either 32bit or 64bit and use that. These available repairs include Start Up repair and System Restore as well as diagnostic tools but does not include a Factory Restore option. The Factory Restore option would be on your Recovery Partition/Recovery Console (for major system manufactures) or Recovery Disk Set (included or available from the mfg) for all manufactured systems. BUT understand that a Factory Restore will wipe out all of your hard drive and return the machine to the way it was shipped from the factory. On a custom machine you will need the Repair Disk for repairs or an installation disk for reinstallation but if you still have your original key, you can borrow an installation disk of the same type (without the key you will need to purchase a new disk with key).|
Explain the 'Problem in the hard drive' and maybe the answer will be even simpler.
You have to be a little bit crazy to keep you from going insane.