How to Identify and Fix Common Problems ?
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If the error message, Unknown device appears, this can indicate that there is not adequate power and the PC can not identify the printer correctly. Verify that there are no extension cables and that the power cable is no longer than five meters. Reseat the power cables.
Restart your printer, router, and mobile device
Restart all devices to clear network and hardware error states. Turn off the printer, and then turn it on again. Disconnect the power cable from the router, wait ten seconds, reconnect the cable, and then wait for the internet connection to complete.
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.
If you see an “unknown accessory detected near you” message (or similar), it means there`s an item compatible with the Find My network that might be traveling with you. If so, its owner may be able to see your location. You should look to see if something you`re borrowing has such a device attached.
Your printer should have been packaged with a USB cable regardless of whether it is a wireless or wired printer. Plug the cable into your printer and your computer`s USB port. The direct linking should trigger your computer to recognize the printer and start up the software needed to complete the installation.
Restart the printer and try again. Unplug the printer from an outlet. You can plug it back in again to see if it works this time. Check if the printer is properly set up or connected to your computer`s system.
Ghost printers are printers that continue to appear in Windows although they have not been used or installed on your system in a long time, which may have been years.
Ghost prints happen when the drum or fuser unit within your printer become faulty. Because a fault with this element won`t heat the particles of the toner to a high enough temperature, the marks being made on the paper are much lighter in colour and appear more faded than typical documents.
It doesn`t slow down your computer as there are no processes or CPU activity associated with them. It adds clutter to Device manager and in general I would say that you should either remove them or fix them. But it won`t have an impact on performance.
If the LabelWriter appears as Unspecified or Unknown in Devices and Printers on Windows, it usually means that the computer has not identified that device as a printer yet.
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.
Check the USB cable for damage and recommended length, and then restart your printer and computer. Turn off the printer and the computer. Disconnect the USB cable from the computer and printer, and then inspect the cable. If the cable is damaged or longer than 3 m (9 ft 10 in), replace it.