You're not alone! This has helped others, but not all...
If you still able to reach the CMD prompt, try sfc scannow
If that doesn't help, try chkdsk /f /r
Also look in your BIOS to see if you can disable Fast Boot and select Legacy BIOS as opposed to UEFI, may allow you to boot from your Windows DVD. Another option is to boot from a non Win 8 Install disk (Win 7?) and try Bootrec from there. (Seems the Win 8 disk is useless in your situation!)