I am downgrading my Windows 8 back to windows 7 and there is a problem with the installation. I enter the DVD with the Windows 7 on it, enter the installation, by clicking install. The istallation starts, with setup copying the current files on the laptop, but it all comes down to the same error again...you need to restart the installation. And i have no clue on what to do...i installed windows 7 a couple of times, but never had any problems on doing so and it drives me mad, because i have no idea, what's the deal with this installation error.