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I'm using these instructions to refresh Windows 8 (RTM) on my Samsung Series 7 tablet. When I got to the "Insert media" screen, I inserted a flashdrive containing only the files en_windows_8_x64_dvd_915440.iso (the Windows 8 installer) and Key.txt.

The first time I tried this, the tablet came back with the error message "The media inserted is not valid / Make sure to insert your Windows installation or recovery media."

Then I rebooted and tried again. Now I don't even get an error message--it's as if I didn't insert the flashdrive at all. The flashdrive is brand new and my PC recognizes it, so I doubt that's the issue.

Any idea how to fix this?

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  • What is the source of the .iso file exactly?
    – Ramhound
    Nov 27, 2012 at 17:51

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Use the Windows 7 USB/DVD Download Tool (never mind the name, it works for Windows 8) and create a bootable disk using the ISO file. Merely putting the iso file on the disk won't work. It needs to be made bootable with the requisite boot sectors and everything

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  • ^what he said. The thing is, just copy-pasting the .iso file wont't make your tablet recognize it. You might have to make it a bootable flash drive. Nov 27, 2012 at 18:30
  • Thanks! After I did that the tablet recognized it, though the refresh failed. I'm just straight reinstalling Windows 8 now.
    – user460847
    Nov 27, 2012 at 19:19
  • Good to know :) @Gutsygibbon Did i sound too complex? If yes, I'll make my answer simpler
    – pratnala
    Nov 28, 2012 at 17:23
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    haha no. Just making sure he got it :D Nov 28, 2012 at 20:28

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