Samsung P2370HD says "no signal"

A few times since building my new system P6T Deluxe V2 and XFX Radeon 5870 my monitor (Samsung P2370HD) has failed to turn on at boot and displays the message "no signal". I then do a reboot and the screen sees the signal the second time around. This has happened twice now and I would like to get this resolved. A while back I switched from the Windows 7 native display driver to the Samsung syncmaster driver for my monitopr. I don't recall ever having this problem before that time.

Any ideas? Thanks!