Hello I need some help from HP - I have a DC5750 Desktop which has been working fine for months... then it upgraded to Windows 10 all by itself - however the Windows 10 installation failed - I did a rollback to Windwows 7 Professional - but now it says that Windows is not Genuene and I cannot activate it. I called Microsoft and gave them the Installed Key and they said that it was locked by the manufacture and I needed to contact them... however I cannot find a number to call to get this key unlocked. ~ Disappointed
Can anybody help me get this machine working again?
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Window 7 Validation after Windows 10 Rollback
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