"Build 7601 This copy of Windows is not genuine" Not TTS Error

I've been getting the infamous Build 7601 error every now and then for a few weeks. Normally rebooting solves it, but it seems to have become resistant to that strategy. After running tool MGADiag tool everything seems to be in order. The product key matches the one printed on the laptop. Thanks for your help! Here is the report: PHP: --------- Diagnostic Report (1.9.0027.0):...