Shut down difficulty??

Registration date
Friday April 26, 2013
Last seen
April 26, 2013
- Apr 26, 2013 at 12:59 PM
I have a pc and it's a Lenovo Z740 running on windows 7.
Earlier today I shut it down, seeing the "!" Icon for updates.
I left it like that thinking it would eventually shut down but when I tried to use it later in the afternoon, the screen just lit up as if it didn't shut down and flashed the words "Logging off" with an actively moving loading symbol.
It has battery life so cutting the power couldn't be a solution. I tried to push down on the power button for a couple of seconds but it still didn't work.

As suggested, I took the battery out and put it back. I turned the PC on to check if it still functions. Now that I'm shutting it down, the screen is blank and all black but some lights like the one on the power button and volume etc are still on