Dell Inspiron 15R 5537 sleep/hibernate issue & weird noises from AMD GPU

Hello Everyone!

I am having issue with my dell inspiron 5537 core i7, 8gb ram, amd 8850m. My laptop doesn't hibernate/sleep and shutdown but sometimes it does... Does anybody here know what is the problem?

Secondly during playing heavy games like GTA 5 i face some weird noises from GPU although this machine is all in one beast but having these type of issues specially the sleep/hibernate make me feel worse :/
i don't know why Dell is not taking notice of all these issues ???