Running Skylake/Nvidia GTX 950 on a clean install. I'm no expert at all and I haven't got a clue what to do. I've tried various things but nothing works and the guides are often not clear enough for newbies - if anyone can help me step by step I'd be very grateful.
You have to install the Nvidia driver.
You can install it from the Addition Drivers application. (Dash > Additional Drivers.)
Choose the one marked as "tested".