Samsung Series 5 will not shut down or sleep

Updated my Samsung Series 5 Ultra on Thursday to Windows 8 and ever since it won't shut down or go into sleep mode. I've tried quite a few fixes that I've found online such as enabling hibernate to be able to turn fast boot mode off but none of those steps worked. So please any help is really appreciated in advance thanks very much

Attached it as a product if that adds any help :)