Here’s what to do if you your Windows 2008 R2 Server gives you the error Bootmgr is missing Press Ctrl+Alt+Del to restart:

  1. Either put in your Windows 2008 R2 CD or mount the ISO
  2. Boot to the CD and choose to Repair
  3. Go through all of the steps to get to the option to go to command prompt
  4. Enter said command prompt
  5. You’ll start at x:\sources\
  6. cd x:\sources\recovery
  7. run StartRep.exe
  8. This will start a repair. Let the repair continue until it is done.
  9. Run the repair again, even after a reboot and into the CD again if you need to.