I had windows 7 validated, and fully working and i wanted to try out windows 8. So i installed windows 8 on a different partition to have dual boot. I opened windows 8, i didn't like it so i didn't activate it. But now when i try to open my Windows 7 i get a black background and on the bottom right of the screen its written "This copy of Windows its not genuine". If i format my D: partition where Win8 is installed will this fix my problem? How can i fix this ?