Your question is a bit overblown, but it sounds like you unintentionally...

Your question is a bit overblown, but it sounds like you unintentionally deleted applications or files from windowsxpP that it requires f can or basic operations.

You can select to install a Linux based distro into any unused space on your hard drive, once it is install most distros are chipped with the capability to read and write to ntfs based partition so you can use the Linux based OS to read and modify your former windows files.

Please post any follow-up questions here.

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