I have Win7 x64 ultimate from the original Microsoft retail ISO when it first got out. I used 7Loader (1.4 or 1.5 at that time, can't remember) and it activated it and worked great for months. Then, March 2nd, I installed KB971033 and it wasn't genuine anymore, so I installed "Program Based Windows7 Loader 1.79 (I think)" and redid the validation check on ms website and it worked. Yesterday, I receive a new "Windows is not genuine" message. I tried to install Loader 1.8 and do the online-check again, but it still say I'm not genuine. What can I do? And no, I did not install any Windows update in the last week.