Yes, it finished 8 passes without errors.
After a couple of hours I'll start the Windows Defender Offline full scan and feed you back.
I have a question here, just in case I ended up without solving the problem.
My laptop didn't came with a separate windows CD, it came with a utility to take a backup of the existing system at that time, and I took my first back up a couple of months later.
I don't want to restore from the backup, I want to install a fresh copy, so if I can get a copy of windows 7 without a key and use the key that came with my laptop, will that be OK ? i mean will that copy identify my key, supposing that both copies are Home Premium.