1. Disable any and all power saving modes.
2. Get a shiny new IEEE printer cable. I've seen this failure and cured it with a cable. Usually the last thing they try since they thought since it printed, it could not be the cable.
3. Try the parallel port mode in SPP, EPP and what else the machine offers in the BIOS.
4. Rarely a printer driver issue. For me, a dead end and I let others try drivers until they are ready to try the above items.
5. NO SCREENSAVER.
6. NO SPYWARE ALLOWED.
I have a Dell 533 Pentium III computer, using Windows 98, and an HP Printer Laser Jet 4050. Weh I boot up Printer works fine, but after being not in use for awhile (maybe an hour)when I call for Print it gives me an "Out of Paper" response, even though it has paper in the tray. To get back into action, I reboot, and we're alright for while, but then the problem repeats. I've talked to Dell and to HP and their individual conclusions are "it must be a software problem." Dell suggested maybe it was confused by programs running in the background, but the Close Programs window only shows Explorer, McVsshld, McVsescn, McAgent, Systray, and wzgkpick (related to Win Zip). Dell Help thought it might be confused by HP Laser Jet 1100 which we had used, so we uninstalled it using Add&Remove Programs, but I notice that 1100 is still on the list of Programs on the Start menu. That's every thing I can tell you. Any ideas, anyone? Bill Oliver