I had an XFX Radeon HD 5770 1GB video card in my machine that had been running with no problems and consistent temperatures. One day last week I was out for about 3 hours and when I came back in I heard a fan that sounded like it was running full blast. I tried to restart the computer but got no video and two beeps. Looking at the beep codes for the Dell Precision T5400 there is not code for two beeps. I turned it off and removed the video card and discovered that the vapor chamber had expanded to 3 or 4 times it's size and actually broke part of the plastic cover. Researching I found that this seems really rare and is probably a manufacturer defect. This card belongs to my son and unfortunately he either didn't register it when he got it or used a different email when he did. This card does have a lifetime warranty if you register online. Anyone ever have this happen?