If the IT-department recommend you to reinstall your computer, please follow this guide:
\uD83D\uDCD8 Instructions
Make sure all your important files are in the Sharepoint folder and is synchronized to the cloud.
Follow this guide: https://support.microsoft.com/en-us/windows/recovery-options-in-windows-31ce2444-7de3-818c-d626-e3b5a3024da5#bkmk_reset_pc&WindowsVersion=Windows_10
Select “Reset PC” and follow the guide.
When the machine starts, it is very important that you setup a Local account.
Follow this guide: https://www.windowscentral.com/how-set-windows-10-local-account