So I recently got my X51 and I'm loving it. I splurged a bit and got the blu-ray drive in hopes of playing blu-rays on my computer. The computer shipped with Cyberlink PowerDVD 10. Well, I popped in The Hobbit and it simply wouldn't play.
Please share the model number of the laptop. Is it N4010 or N4110? Please update the video drivers from this link: http://dell.to/XvD8Hu. Once you click the laptop model, select 'Video' and install the driver depending upon the video card.