I have windows vista installed on my machine, and before 2 weeks ago it was working super fine.However now there are lot of error messages coming and some programs like internet explorer stops working suddenly.

I think some of my files should have been deleted by my little sister.So is there any software to fix the registry issues and recover the deleted files at the same time. I also tried to re-install applications.But it is not working. It stops and gives error messages during the installation.

I can't format the PC cause i can't go in to boot menu. (Cause password is missing). I have heard about something called registry cleaners.but is there a software to do both optimizing the PC and recovering the files.

Mmm..Sad that i got no replies yet.Anyway i have solved my problem thanks to this great software JV PowerTools 2009 .I just used it's File Recover Wizard on the System Drive and run a basic registry cleaner wizard.Now all the error messages are gone and PC loads to desktop and to the normal speed within less than 10 seconds.