As you install and uninstall programs, browse the Internet and download to your computer, several unneeded, obsolete and sometimes dangerous files accumulate on your hard drive, taking up disk space and slowing down your computer. As they accumulate, they often cause system errors.
These unnecessary files include everything from temporary (*.tmp) Internet and computer files, off-line web pages, deleted files in your recycle bin, and other unnecessary files. You can recover valuable disk space by getting rid of these files, and help speed up system performance.
While Vista’s gets rid of a large number of unneeded files, it still leaves behind a lot of junk. For example, it will only allow you to delete files that have not been modified within the past week. Follow the steps below to manually delete these files from Vista.