Are you encounter your genuine Windows 7 has activated successful long time ago but show ‘Windows 7 Build 7600. This copy of Windows is not Genuine‘ watermark on your desktop then become black screen later ? This happen to my friend ‘s PC after having Windows updated recently. Below are the solution may can help you if you having same problem.
Windows 7 Build 7600. This copy of Windows is not Genuine and Black Screen Solution
Open up registry editor by type ‘regedit’ in Windows 7 searching bar,go to HKEY USERS > S-1-5-20.
Right click ‘S-1-5-20 and select ‘Permission’,choose ‘NETWORK SERVICE’, put a check to ‘Full Control’ and ‘Read’ option in ‘allow’ selection. If can’t find ‘NETWORK SERVICE’, select ‘Advanced’ add in it, then reboot twice.
If didn’t show blank screen and show watermark message in your desktop only, it may ‘Software Protection’ service already disable, enable it can settle this problem.
Hope can help you all to solve ‘Windows 7 Build 7600. This copy of Windows is not Genuine‘ issue.