After a restart recently, my computer wouldn't boot in to Windows 10. At the time I didn't have a Windows 10 installation media so I tried using boot tools on the Ultimate Boot CD to no avail. I now have the Windows 10 install and have booted from it then selected to repair my computer, then Startup Repair, however I get the following error on a blue screen:
Startup Repair Startup Repair couldn't repair your PC Press "Advanced options" to try other options to repair your PC or "Shut down" to turn off your PC. Log file: [ Shut down ] [ Advanced options ]
When I boot with not boot CD I just see
Loading operating system... but it freezes there. I have tried booting from Hirens boot cd off directly off the partition with Windows installed on it, but when I do that it gives me the message
bootmgr is missing... press ctrl+alt+del to restart... or words to that effect.
What I think I've managed to do is delete/corrupt the boot manager, and possibly the MBR for disk with Windows installed on too - but my terminology and experience here may prove me wrong. My question is, how can I restore my boot data so I can boot in to Windows 10 again? Do let me know what other, specific information I can provide to help fill out the blanks.
Note: I booted in to PartedMagic from Hirons boot CD and I was able to successfully see the drives and partitions, including all the files. This looks like just boot data has been ruined.
Update: As pointed out in comments to Vassile's answer, I tried the
/fixboot from the command prompt in a recovery console from the Windows 7 CD but trying this again with the Windows 10 recovery actually made it possible for me to use Hirens boot CD again with the "Boot Windows .. from hard drive" option and I'm finally back in to Windows! I still need to fix the missing boot manager, and my D: drive (a partition on the same drive as C:) is suddenly missing too, but I'm a step closer.