I have an HP Business desktop purchased about a year ago with Windows 7 Professional installed. Earlier this year I took the free Windows 8.0 upgrade from MS. Now I want to upgrade to Windows 8.1 but the upgrade fails but no reasons are given. Ran the HP compatibility test for my machine (B2D12UT#ABA) and HP states this machine has not been tested. What do I do next to make the Windows 8.1 upgrade work?
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