Hi Stacy, thanks for your note.  Sorry about the trouble with the screen.  Can you let me know:

1.  Are you using the USB cable that came with the screen?  (Longer cables can cause issues)
2.  Are you connecting the unit directly to your computer and not through a USB hub (even a powered hub)?
3.  If the answers to #1 and #2 are "yes" then can you try using a different USB cable, even if it is longer, and connecting directly to the computer (not to a hub)?

Thank you.