Dam.. I wish i would have read some of the comments below, now i have to recover the data of this hard drive because this re-installed WIndows Home instead of repairing the start up.. Thanks a lot jackass!!!
If you have more than 1 partition,you can save all file data to another partition.So when you want install or clean you windows ,it will re-install Partition where old WINDOWS has been installed.So you can save them to another partition. =)