I have had several failures to upgrade. I am running Windows 7 SP1 on a Dell XP8500. I have recently installed a SSD to use as my main drive with the original as data store. Bought ViewSonic touch screen monitor specially for Windows 10. The most recent attempt gave the most information. error 0xC1900101-0x30018 error occurred in First Boot Phase during SYSPREP operation. Can anyone suggest a solution. Terry ps A large update arrived this morning to do with the upgrade so will try again . That also failed, but at least I got the same error report this time.