Following the sample template as much as possible: Problem description: Printing to HP Deskjet 5550 via LPT1/parallel cable does not work for Windows apps. A) print from CMD shell - yes I can B) print from HP Utility - yes I can C) print test page from device properties - no I cannot D) print anything from Excel, Notepad, Word - no I cannot Printer will feed a page, do what I call pre-print calibration, then go back to home position and paper ejects. No printing on it whatsoever except in the successful stuff. Attempted fixes: Did the following: 1 - Windows troubleshooter, even reinstalled latest drivers for the printer - from HP. Drivers dated Mar 2002 <shrug> 2 - tried BIOS LPT port settings for SCP, ECP, EPP, ECP+EPP (DMA mode 1 and 3 both) 3 - tried uninstall of drivers, setup printer to USB port; reinstall drivers - same results as in problem description. 4 - toggled spooler off and tried immediate print. Same results as in problem description. Recent changes: New system - and mobo specifically ordered because it has an LPT port; have tried PCI-parallel cards on other Gigabyte and Asus mobo with no luck (see below) Operating system: Windows XP/SP2 System specs: Case: Raidmax Smilodon 612-WBP, 500w PSU (same as Rykus but in blue) Mobo: Gigabyte GA-M61PME-S2P CPU: AMD Athlon 64 X2 6000+ (3ghz) RAM: Kingston DDR2-1066, 2x2gb VID: Asus EN8400GS (NVidia 8400) 512MB PCi Expressx16 HDD: WD 320GB IDE using Vantec IDE-to-SATA converter on SATA Channel 1 (OS sees it as a USB device!!) Optical: LiteOn DVD/CD-rw combo drive on IDE as master device Optical 2: LiteOn CD/RW on IDE as slave device Prior efforts to use this printer were tried on: Asus M3A78-EM mobo with Rosewill PCI-to-parallel card and as USB. Gigabyte MA78GM-US2H mobo with same PCI/parallel card and USB. Neither was successful, nor was contacting HP. I got some fellow in some other country sent me the same instructions even after I specifically stated they failed. MS message boards also were no luck. I had done all that was suggested - including registry clearing AND install of s/ware. Printer successfully prints on old system (Asus A7N266-VM/AA mobo, AMD Athlon 64 2000+ (1.8ghz), 512 MB PC2100 RAM). This system is losing the PSU so is effectively dead. Any ideas? Thanks!