I loaded NUS to my windows vista laptop. I did the one click optimization and waited almost one hour for the system to complete the entire process. System did a shutdown and restart, went to the black screen with white letters and characters and at the end nothing changes. The system health continues on FAIR and still shows the same items on the right side; ie. clear dcument history (which I did 4 times), defragment discs, etc. in other words it does not recognize the steps taken so far. I could uninstall and reinstall but it took me a long time to get this going and would prefer another solution. By the way, it also shows windows atartup time of .47 current vs .07 previous. Thanks, AG