How to update the video drivers of my Inspiron 15R 5537 ?

Can anybody help me in updating new video hardware drivers for my two month old " inspiron 15R 5537 touch". The problem is that any game which I play on it struck, slows down and finally hangs my os for which I have to do forceful shutdown. When I installed the latest driver from the intel and amd website the performance of my laptop highly increases and no slowing down, hangs and laptop run smooth. But on installing the drivers other than dell provided , my laptop never wakes from sleep. Never shut down. Any help in this matter is highly appreciated. Dell has very old drivers. Please somebody help me.