Thank you for using the Dell Community Forum.
Is this happening with more than one 1703fp monitor?
It very well could be the video card causing this to happen. Try putting a few of the monitors on other systems to see if the problem follows the monitor. If so, you need to contact Dell to have the troubleshoot and resolve the issues you are having with these systems and replace the bad parts.
Is this with the analog or digital video cable? We have a very similar problem on GX270 w/nVidia AGP video card and 1801fp monitors if we use the digital cable, but have not been able to reproduce the problem when we change to the analog cable on the workstations.
I was actually able to resolve the problem by uninstalling the old drivers for the nvidia video card and then I booted the pc to the floppy drive that had the DVI monitor flash tool from dell on a floppy and then i had to reinstall the latest greatest nvidia drivers from nvidias website.
let me know if you have any other questions,