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I have the Windows 8.1 installer ISO contents on a USB flash drive, and I would like to use it to refresh my Windows 8.1 installation which has become corrupted. How can I do this? Whenever I go to the advanced boot option, all it does it prompt with a message asking me to insert either my install CD or recovery media.

  • Your flash drive is your installation media. I assume the installation is corrupt which means its not bootable? – Ramhound Feb 12 '14 at 1:19
  • @Ramhound When I try to run the setup.exe file just to see if it works, it opens and then says that it failed to validate the product key. I do not want to do a fresh install, just a recovery, but the recovery is not working. – DavidB Feb 12 '14 at 1:20
  • Why don't you just use the DISM and sfc /scannow commands? – Ramhound Feb 12 '14 at 1:24
  • @Ramhound I wanted to do it, but it didn't fix the problem, the problem being BitLocker is corrupt. – DavidB Feb 12 '14 at 1:35
  • If neither command detected any corruption then your installation isn't corrupt. – Ramhound Feb 12 '14 at 2:33
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