If the IT - department recommend recommends you to reinstall your computer, please follow this guide:
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Make sure all your important files are in the Sharepoint folder and is are 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.
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