Do you have other accounts on the computer? Do they work? Your windows installation is likely corrupted, and windows may need to be reinstalled. Before you reinstall, try [link|https://support.microsoft.com/en-us/windows/start-your-pc-in-safe-mode-in-windows-92c27cff-db89-8644-1ce4-b3e5e56fe234|booting in safe mode|new_window=true], and see if it works. Then try running the disk check by opening cmd as administrator, and typing ``chkdsk C: /r``, after that finishes, run sfc by typing ``sfc /scannow``, and DISM by typing ``dism /online /cleanup-image /restorehealth`` into the terminal. If it still doesn't work, you can try creating another account in safe mode, or copying your data to a hard drive, and [link|https://support.microsoft.com/en-us/windows/reinstall-windows-d8369486-3e33-7d9c-dccc-859e2b022fc7|reinstalling windows|new_window=true].