I am trying to upgrade Windows 7 Ultimate 64bit on a Dell Alienware Aurora R3 desktop PC via DVD to Windows 8 Pro 64bit (RTM) and it freezes on the Windows Splash Screen after the installation and then after the restart. It looks like it has put the PC into standby mode with the Windows logo frozen on one screen, however I cannot get PC out of 'sleep or hibernate mode' which is what it looks like it's done (flashing yellow Alienware logo).
When it happened the first time I had to manually shut it down and then restart it as the Win8 installation just stalled. After restart it said Windows 8 installation has failed and it successfully rolled back to my instance of Windows 7. I've tried it again and it's done the same thing.
This is very frustrating as I did a clean install of Windows 8 Pro 64bit (RTM) on my Sony Vaio VGN-Z46GD laptop with no problems.
I have an Alienware Aurora R3 (only 8 months old):
Intel Core i7-2600K
8GB RAM
1.5GB Nvidia GeoForce GTX580