Hi Saurabh A,
Thanks for the reply, I will try this out and get back to you. I have uninstall recent 3rd party software (of which there wasn't very much) but I've had no new hardware. I've also been getting the 'Nvidia Kernel Driver
has stopped responding and has recovered' error when the screen goes black periodically, could it be related? I have the latest Nvidia drivers
and I've tried the Microsoft Fixit for this error. I will run Memtest when I get the chance.