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#71
I would recommend you start copying files only that you want to keep (movies, photos, documents, etc) to the external drive. It looks like you are not going to get a complete backup. When you replace the hard drive with a new one, you will have to do a clean install of Windows 10. You will probably have to use another computer to download and make a Windows 10 installation USB flash drive or DVD, unless you have a friend that already has one made they can let you use or give to you.