Hi Guys ! This is my first post , hope it's on the right place. After read a few threads from this forum and couldn't solve my problem, I decided to create a new one. I just got a new PC with Windows 7 Ultimate 64bits, and there's no way to validate it using Windows Loader 2.2.1 (It's the last one I found on someone's assignature, can't remeber his nickname). I saw on some thread to check the BIOS, and turn off the UEFI boot mode, and just leave the Legac mode [ENABLED]. Well, after change the bios config. My computer no longer booted the SO so I just leave as default configuration. The error I got was "Unsupported partition table" I already read the Read Me of the WinLoader: Code: You're either using GPT on a UEFI motherboard or you've got a locked OEM partition. Both problems can be fixed by fully formatting your entire hard drive. . But I don't want to format my computer. Isn't there another way to solve this problem? Thanks.