I opened my C drive menu and it displayed almost 90,000 files in it's drive. I know many files are not needed, but I don't know which files to keep and which to delete. My computer runs very slow and I think it's the number of files on the drive that is slowing it. The computer runs on Windows XP. Scrolling down the list, there are many files with a "dll" extension and many that are listed without an extension such as; "SPUNINST". I could delete all files, but that would remove files that I use, such as Autocad, Word, Excel files, etc.
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