Hi, guys,

Last weekend, one of my friend tried to install windows 8 on my laptop. But it turned out to be a failure. As I know little about the Win 8 operating system, so I'm here for your help. During the installation process, the fowllowing sentence came up:

Windows Setup does not support this usage of the /BTFolderPath command-line argument. To install Windows, restart the installation without this argument.

My friend said he may mistakenly modified certain parameters. But he did not know which one had been modified. And how to recover those modified parameters to ensure a perfect installtion?

Thank you very much!