I've just done this then tried to do the scan again and it go to saying beginning system scan and started varifying it then saif it could not preform it again.
I know this issue seems huge and like you're going to loose everything but its not and you wont I promise.
Get ready for the worlds simplest fix to this issue. Start your pc and use the F11 to boot into recovery mode.
Next select Advanced and then Command prompt. From here run chkdsk c: /r /x and watch the magic work. If
chkdsk only scans you will need to run sfc /scannow and reboot. Problem solved! Windows cannot repair its self because the boot parameter is corrupt and no recovery will fix it for some reason but the tools you need are all already there. Don't be fooled into thinking a complete system restore is needed. That is the blind troubleshooting with a shotgun in the dark. I hope I saved you some trouble.
Edited by ririguy, 12 August 2017 - 08:06 AM.