On the 27/12/15 I reset my computer after backing everything up on an external hard drive. It instructed me that the reset was going to take all my personal preferences and information off the machine and so I let it reset. However it's been three days now and it's stuck on a booting up screen with the word 'restarting' and a little loading icon above it. It's been like this since a few hours after the reset and I don't know whether to leave it or to turn it off or if something has gone wrong.
The machine I'm using is an inspiron 17 5000 series laptop, which was running Windows 10.
Any help is greatly appreciated.