I have a Dell Inspiron 5537-9669 laptop. My previous two laptops were also Dell and i was happy with them since my wife and my friend are currently using them. But i had some concerns about the performance and decided to buy a i7-4500U, 8GB laptop.
So when i first bought it, it continuously showed me alerts on updating to windows 8.1. I updated it, but most of the functionalities did not work correctly (wireless connection problems, sleep mode problems, video hardware driver problem). I tried drivers from dell support system, did not work, i searched forums, tried all of the ways
http://en.community.dell.com/support-forums/software-os/f/4677/t/19538482
http://www.tomsguide.com/answers/id-1880807/dell-inspiron-15r-5537-graphics-driver-problem.html
Result was an average performance laptop with continous graphic card driver problems and each time i got an error, i remove and re-install amd drivers again and again( frequency is about once in a month).
So i really regret buying this laptop, i have not used such a problematic one before.