RE: Great Experience Until video_dxgkrnl_fatal_error
Have you already tried reinstalling the video card drivers? If not, try reinstalling both the Intel and the NVidia/AMD drivers. Do one at a time and start with the Intel driver. You can download the drivers from the Dell support site.
Dell | Alienware Technical Support
Opening your case does not void your warranty! Check out Alienware Artificial Intelligence
I can't always reply to PM's, if you need extra assistance visit: