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How to use DiskPart to clean and format drive not working on Windows 10
https://www.windowscentral.com/how-clean-and-format-storage-drive-using-diskpart-windows-10
Enable IPv6 on your newer CenturyLink modem
https://www.centurylink.com/home/help/internet/modems-and-routers/advanced-setup/enable-ipv6.html