I’ve purchased a Windows 8 upgrade for my Windows 7 machine. While upgrading I ran into a problem.
The upgrade came to 100%, and then said “Your computer will reboot in a few moments”. After a few minutes it came up with a general error “Windows 8 Setup could not complete” and then it closed. My computer didn’t reboot, and Windows 7 just kept on running.
After removing some applications like my virus scanner (NOD32) and some other applications i tried again. After about an hour I got exactly the same error.
Then I found the following error:
ConX::Setup::Media::CWorkerProc::SetupThreadProc: An error occurred while servicing the boot files from [C:\$WINDOWS.~BT\Windows\BOOT]; status = [0x80070015][gle=0x00000015]
After a lot of searching I’ve found the following solution:
Add a drive letter to the 100MB system partition which resides at the beginning of your harddisk. I assigned the letter S.
After I did this, the setup continued where it previously stopped with an error, and Windows 8 was installed like it should.
When Windows 8 was completely installed, I removed the drive letter from the partition. After this, Windows 8 was running flawlessly.