|To phil22, thanks for trying to correct me. But if he does not have a Windows 8 DVD installation disk, he cannot do what I say even if I misinstructed him, by your thinking.|
Any way, I could also advise him to attempt to do a reset of the OS if his laptop came with Windows 8 pre-installed and this option is available.
To me, it is not up to you to ask why on eath he installed Windows 7 drivers. He did something wrong, maybe, and now wants some help. This is the way to learn things, sometimes.