Hello there. I bought my laptop with Windows 8 pre-installed and when the 8.1 was out, I successfully upgraded to it. Then I read about the Windows Technical Preview, I installed it and saw that it is a very very buggy version, so I tried to return back to Windows 8.1. I have attempted to install it through USB, or hard drive partitions making them both bootable etc., but it always stucks at 93%. I run it as administrator, change the compatibility settings, remove any external devices, try everything but still the same issue. What can I do? I even tried 2 different iso files for Windows 8.1 Pro x64, all to no avail. Still the same problem. Please help me out as to what to do to successfully resolve this. I have searched for this issue and tried most of the advice that was given, but nothing worked for me. Thank you.