I've got an Acer Aspire E1-572G laptop which has two graphic cores...Radeon HD 8750M & Intel HD 4400
So! What does that have to do with my problem you may ask! My laptop doesn't go to hibernate, sleep, ... and it doesn't even shut down! & it all began after updating both graphic drivers!
I've seen some other people having the same trouble but unfortunately the best suggestions were that you should update your graphic drivers!!!
So I would appreciate if you don't suggest me that!
I once read somewhere that it could be solved by removing the battery for a few minutes and putting it back but that didn't help! The only way I can turn off my laptop now is to hold down the power button for 5 seconds! And actually I don't like shutting down! I'm a man of hibernate! (:D)
Oh! And I have Windows 8.1 running! AND as it may help! I once closed lots of processes related to graphic controls and it helped me shut down my laptop once successfully! But it didn't work the other times or I couldn't realize which task causes the problem! By the way! I updated my graphics drivers in order to set up Blue Stacks App Player! I'm not sure if that takes part in it or not! I would appreciate your help :)