OK, I installed Windows 7 Ultimate x64 Bit from an Untouched DVD download of the same a few months ago. Then ran DAZ's loader and it was activated and I was happy. Then I decided to be experimental and installed Ubuntu. Used it for a few days, then got bored of the same. Decided to uninstall it and uninstalled it according to a video on YouTube. Which required me to delete the Linux Partition from within Windows and then Re-Write the MBR Using EasyBCD. I reboot and the next thing I know, my Windows 7 ain't genuine anymore! I tried using Daz's Loader again, but it says Unsupported OS Information and Unsupported Partition Table. From what I read, the entire Hard Drive has to be formatted. But backing up around 600GB of data isn't easy. Any other ideas? BTW, my computer is a self assembled computer. If the last bit of info was ever required.