I've had the same problem with the reverting changes for 2months now. Every 3 days my laptop force updates, fails, reverts, gets stuck trying to revert. After turning on and off the laptop a bunch of times in a row it slows down the reboot enabling me the right amount of time to hit the shift/F11 key and have it actually let me reset my computer. Then 5hrs later I am back up and running for about 2days 3 if I'm lucky then the force update starts all over. I have tried everything I have found on the internet in the past 2months. I'm sick of it and am most likely going to just start upgrading my linux desktop and say F windows on the laptop and put a new OS on there as well. All I used my laptop for was my steam games and now its not even worth installing steam then my games just to have to redo it a few days later. I got so mad last month I went out and bought a ps3 so that I could play the new COD:AW when it was released and not have to worry about loosing my early access because my laptop wouldn't turn on. (I'm glad I did too, 'cuz sure enough Nov 3rd my laptop forced updated itself yet again (and tonight as well).
I contacted MS customer support as well as my laptop manufacturer and they both told me the same bs that I've read on the net and tried already. I truly believe windows 8 is the worst OS they have ever made. Id rather use Windows 98 with dialup at this point, it'd take me the same amount of time to do anything as its taking me now after having to reinstall windows every few days.
---For anybody having this issue just turn on and off your laptop enough times til it's a bit slow when turning back on and then do the shift/F11 trick and you'll get out of the loop. For what to do from there, well you are on your own because MS doesn't wanna fix this bs.
--Also you can pull out your CMOS battery as well as your ram then put it all back in if your stuck in the loop and can't get it to stop.