It sounds like your HD MBR (master boot record) might have got corrupted. When an OS stops working from one day to the other and you get these kind of issues it is very unlikely it is a Windows problem. Windows recovery tools are pretty good and the OS has some redundancy built into it.
The only way to deal with issues like this is to have a clone/image of your HD so you can do a bare metal restore. Even if you managed somehow to fix the problem your HD cannot be relied on. Might do the same thing again in the near future.
Last edited by multiweb; 11-10-2016 at 12:45 PM.
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