I don't know the password and the Service is locked
SOURCE: HP Laserject Printer/Copier
first u must diagnostic the problem to see if the problem from the drum unit or the fusser unit by stop the printer in the middle of print and remove the paper then u can see if the smudge appear it well be from the toner if not then the fusser faulty
SOURCE: hp deskjet 3550 driver be installed
Here is the driver download page for your system (click here), just select windows version and start download.
You will have to run the file after downloading, it will start a setup wizard, keep printer unplugged from PC usb until required from install wizard.
SOURCE: I can't get my HP Laser Jet 3550 printer to
HERE IS YOUR DRIVER ->
If you need more help post back!
Thumbs and testimonial are welcome!
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