I have a XPS400 with a 1905FP monitor w/FeForce 9600 graphics card. The usb monitor failure occurred well before the upgrade, however it only seemed to fail after the system came out of a screen saver or when on stand by. I updated the monitor drivers with Dell either before or after I added the graphic card and it seemed to work well for a while but stopped responding later. Sometimes it does even work when the computer is first booted up. Any suggestions?