I unplugged all USBs (including my wireless mouse). Not sure if this solved it, or if I just got lucky though... good luck!

Does anyone have any info on this? I'm kind of confused as to why it says no one has even viewed this topic

halfway through the installation, it reverted back to 8.1, and I got this message.

https://slimgur.com/images/2015/08/04/33138df16dc000a36aecea0f5e373f1f.jpg
the troubleshooting tips leads to...