Sir, I had installed Windows 7 Ultimate a few days back. Then i tried to activate it using the loaders downloaded from net & also from this forum. And it also activated it. But when i rebooted my pc next time, it creates problem and said that bootmgr is compressed, please reboot using Ctrl, Alt & Del key and thus i have to reinstall win7. But again after using activation loader, the same problem occurred again. Please help me to activate my windows without using the loader software...... Regards