PE T140 with nVidia Graphics card

I am tried adding a PNY NVIDIA Quadro K2200 Graphics Cards VCQK2200-PB to my PowerEdge T140 about 8 weeks ago.   The only slot that would accommodate the graphics card was the bottom slot which was occupied by the PERC H730 RAID controller.  I moved the RAID controller to another slot and installed the K2200.  Everything worked great until the video card stopped working this afternoon.  My guess is that the card won't work long term in the bottom slot in the PE T140  due to cooling/heat issues.  Am I overreacting due what may have been a "bad' video cad, or is my assessment correct?  Thank for your help.