I was hoping to not have to reformat.
Yes, I Do have a genuine Windows 7 64 bit OEM.
I don't have and cannot make; a restore disc, (especially now, since Restore/bckup are the missing files)
I have had nothing but problems making restore discs..they ALWAYS FAIL. I follow the instructions to the letter, and I burn 2 or 3 discs, then, I am informed that the process has failed, leaving me with a few throw away R, or RW discs, (the RW discs will not allow reuse, once a windows backup has been burned)!
OK, I ran sfc /scannow, got a report : "Windows Resource Protection did not find any integrity violations."
Checked the 'System protection Tab...nada

Wish me luck on the old Repair/Reformat ( I hate trying to remember all the stuff I have loaded over 2 yrs

)