Troubleshooting suggestions :
1. Do a system file check...........
Start button > type cmd > top left, right click at cmd.exe > select Run As Administration > at the flashing prompt, type sfc /scannow > press Enter key.
Will take quite a while.
When finished, it will tell you one of the followings : (paraphrasing )
No integrity violation.
Found corrupt files and successfully repaired.
Found corrupt files but unable to do repair.
If it finds corrupt files and has successfully done the repair, try the password issue.
If it finds corrupt files but unable to do repair, please post back.
2. Do a disk check...........
Start button > type cmd > top left, right click at cmd.exe > select Run As Administration > at the flashing prompt, type...