I have not seen your symptoms. I wish you good luck resolving it.

Microsoft should release a 10166.iso soon I would think.

This morning, without doing anything except boot Windows 10 (10162) and attempt the Windows Update, it found and is currently downloading fbl_impressive Professional 10166. Perhaps it didn't update...

I too have been unable to obtain update 10166. After my office partner managed the upgrade on his nearly identical hardware, I finally deleted my old WIndows 10 Preview install and initiated a new...