Agree 100% Sam.
Same thing happened to me and did ALL suggested in ALL the different threads where this issue has been posted.
My computer was so clean Doctors were dropping off there surgical instruments to be cleaned by me.
No WGT for 2 days.
3rd day morning no luck, then, afternoon same day tried again and BAM back online and it's been working fine ever since.
Sheeeesh.
Good luck to the O P. I feel your pain.
Cheers Alan