Can you please open a command prompt and type slmgr /xpr
If you do not receive a popup indicating the machine is permanently activated, you may have an issue. However, I am unfamiliar with Windows BSOD over failed activation.
Windows 10 was released in 2015, so how could this be going on for 6 years? Sorry, I see you are on Windows 8. Yes, I would run that command and also scan for malware/virii on this system if it says the machine license is activated.