Yes, it is very important to install the drivers for the laptop. I think you're experiencing a heat issue.
Have you ever cleaned the dust from the exhaust vents? Laptops need to be sprayed with a can of compressed air every few months, to keep from having a dust build up. Which leads to the heat issues which can cause the symptons you're having with your laptop.
Just to clarify, when it goes blank. Is it the screen that seems to go off, while everything seems to continue working? Like light indicators, and fan spinning?