I know the solution.
I upgraded my win7 to win10 too, after i downgrade for test some performance difference between the two operation system, i try to upgrade again, and i take the 80070006 error code too, so Download the Wise Registry Cleaner, make a full clean, and restart your pc, start the updating to win10, when you take the blue screen with upgrading action, disconnect your PC from internet, wait the full upgrading, when you complete the upgrade, connect back to network ,i do this and i can upgrade again with successful.
Sorry for my bad english :'D
have a nice day
08-19-2015 12:01 PM