Hello guys. I am stuck at Insider Preview Build 10162 getting the "This build of windows has expired, so your PC will restart every few hours, and eventually will fail to start. Go online for more information." message and windows is restarting randomly, which is getting really annoying. If I try to update it to a windows 10 with the official windows iso tool it asks for a serial which I can't provide nor skip. Is there anything I can do besides a clean install? I guess I'd rather to move back to windows 8.1 or 7 also? Seeing how this happenning in the future or having the OS work so unreliably is really not a choice for a daily driver OS. I'd really apreciate some advice as this is driving me crazy.