I wanted to upgrade the graphics card on my Dell Precision T5500 simply because the old nvidia 64mb card won't even power the screen saver. I got a nvidia Quadro NVS 290 256mb card but after install, just got blank screen.I followed all the correct procedures but still no joy. I replaced the old card and all worked again. After several attempts I finally got the new card to work and all was fine until I shut down the computer and on the restart blank screen again. Would really appreciate any help or suggestions on why this is happening.