Computer not allowing me to delete, copy and paste, move or save files or perform certain functions- see information below

[Windows 10]

Hi there, I was wondering if anyone would be able to help me. I'm unable to delete, copy, paste, move files, or search in file explorer. Also not able to open apps such as 'run' and progammes such as Control Panel are blank until I search something in the box. Other apps like wordpad and Microsoft Word I am&n

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