This topic seems to have been covered quite heavily within these forums but there doesn't seem to be any trend from what I've read so far so I'm just looking to for some starting points to help troubleshoot.
I have thin client booting successfully over DHCP. All looks good and the screen with the flashing dots appears leading me into thinking that I'm about to see the expected log-in screen. However, all that transpires is a blank, black screen - that's it! No error(s)! Nothing! I've changed my pxelinux.cfg/default file and removed "quiet splash" and restarted the thin client. Still nothing useful is presenting itself. My assumption at this point is that this is not an DHCP issue.