If you check the model number m17x, you will see that its actually a laptop and not a pc. The parts used are laptop parts and not desktop parts per se~ so there are no 'checking cables' and 'VGA connectors' unless the OP hooks it up to a monitor and has the laptop function as a desktop PC instead of a laptop. To open up a laptop and dismantle the cooling unit to be able to apply new thermal grease or reseat the GPU can be a rather daunting task to somebody who is less experienced with tech especially when it comes to laptops, while it maybe a fairly simple and easy takes in most cases, the components are more tightly packed and there is less room to work with so knowing what you're doing helps a lot when dealing with laptops, its not as simple as just slotting expansion cards into PCI or PCI-E slots - there is a lot of dismantling that needs to be done and how much depends on the laptop itself. you might need to take the bottom of the laptop off completely to get to the components inside, Opening it up can also void warranty - Most OEMs dont care if you add more RAM or a new Hard drive but opening it up completely can void warranty. ---- Pigas - your best bet is to RMA the laptop if its still in warranty. the graphics card might have come loose and needs to be reseated. while its a simple task to reseat the graphic card to most of us here at TPU, you might not be so experienced in dealing with it on your own. better safe than sorry and have Alienware deal with it then you attempt it yourself and cause further damage to your laptop which isnt cheap to begin with.