Unknown Printer

How to Identify and Fix Common Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced technical support :

Make sure the 2.4 GHz router band is enabled and broadcasting. If the router broadcasts separate network names (SSIDs) for each band, connect the printer to the 2.4 GHz band SSID. Press the Wireless button and the Cancel button (X) from the printer control panel at the same time, and then hold them for three seconds.
If your USB printer is not found by the HP Smart app, make sure Windows is up to date, check for USB connection issues, and then reinstall the app. Note: An HP+ or eligible printer cannot enroll in HP Smart Advance or Instant Ink using a USB connection.
Check Cables and Printer USB Ports

Check all cable connections (including the power cord) on the printer side. If the printer does have power and you`ve properly connected the communication cable, but the printer is still not recognized, try switching to a different USB port on the PC.

Status unknown means a circumstance where samples were scheduled to be taken by the regional water quality control plant and were not, samples were taken but not yet analyzed by the report due date or where a new discharger has yet to be sampled.
If your printer`s status displays “Printer in error state,” there may be a problem with the printer itself. Make sure the printer is turned on and connected to your PC by Wi-Fi or cable. Check it for low paper or ink, and be sure the cover isn`t open and the paper isn`t jammed.
Make sure your Wi-Fi network and printer setup meet connection requirements. Restart the printer and the computer or mobile device to clear possible error conditions. Make sure the printer is not connected to a computer with a USB cable.
Open the printer`s web page and Sign in as Administrator. On the General tab select Reset Factory Settings in the menu.
The problem of the printer icon not displaying in devices & Printers is frequently resolved by downloading and installing the most recent printer driver. If your printer drivers are out of sync, they may not function until you download and install the latest update.
Open the start menu and select Control Panel > Administrative Tools > and choose the Services icon. Locate the Print Spooler service and right-click. Then select the option to “Stop” the service.
In the search box on the taskbar, type control panel and then select Control Panel. Under Hardware and Sound, select View devices and printers. Select and hold (or right-click) the printer you want to share, select Printer properties, and then choose the Sharing tab. On the Sharing tab, select Share this printer.
Unplug and restart your printer

Sometimes power-cycling your printer can resolve the issue. Turn off your printer and unplug it, wait 30 seconds, plug your printer back in, and then turn the printer back on.

Go to the Start icon on the bottom left of your screen then choose Control Panel and then Devices and Printers. Right click the printer in question and select “See what`s printing”. From the window that opens choose “Printer” from the menu bar at the top. Select “Use Printer Online” from the drop down menu.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

HP Laserjet M3035xs RFU Upgrade
ANSWER : There’s no way.

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Unknown Printer

evenly spaced horizontal lines on hp laserjet III printout
ANSWER : The lines would be a toner cartridge problem. Which paper tray? The MF tray or the optional paper cassette?

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Unknown Printer

LaserJet 4 won't Power Up
ANSWER : I haven’t seen that particular behavior on that model. It either works or it doesn’t. My first choice would be the power supply.

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Unknown Printer

HP Laserjet 4250 – RFU LOAD ERROR
ANSWER : Italiano:

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Unknown Printer

How to copy a card slot in HP laserjet 4250N
ANSWER : None that I know of, using a computer is likely your best option but I never attempted it.

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Unknown Printer

What repair needs to be done for a "50 needs repair" message on an HP Laserjet IIIP?
ANSWER : I don’t know what you mean by good toner cartridges. They haven’t been built in about 10 years, so if they are new OEMs in the box, they are guaranteed to fail. The 50 error on that printer is mostly a burned out fuser lamp. This site was sold, so as you can see, there are no more kits available.

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HP Laserjet 4200 50.2 Fuser error
ANSWER : if you are using a good fuser the next part to try would be low voltage power supply

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Unknown Printer

LaserJet 2200d Stopped Working
ANSWER : I am able to print a demo page and no lights blinking, tried different slots to no avail

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Unknown Printer