I have an ASUS Desktop with a Core i7 3770, 16GB Ram, an Nvidia GTX 970, and a 250 GB Intel SSD and a 2 TB HDD. Windows 8.1 is loaded on the SSD. I am trying to update to Windows 10 with the free upgrade icon in the bottom left corner since it say my update is ready. I goes through the whole update where I get stuck on the blue screen that says:

Configuring update for Windows 10
100% Complete
Do not turn off your computer

The circle thing freezes in place and the mouse freezes in place and can't be moved even though it says 100% complete. Is this normal? How long should I wait for this? I have waited 30 mins without it doing anything then I restarted. It booted back into Windows 8.1 but three times in a row it has stuck at 100%. I have unplugged all USB connections other than the mouse and keyboard but it still freezes up. Please help.