HP Color LaserJet 2550L
I got a free printer. I brought it home, setup and tried out. It worked fine. toner cartridges and imaging toner cartridge levels were all good.

Experienced technical support provide their insights in answering this question :
Hello .. I have a problem with my HP1102w printer.. It had worked fine for a while.. But now it will not print after it shuts down.. I have reset it to factory setting,, and removed the drivers/software from my computer and reinstalled several times using the wireless install.. but everytime it will work just fine wirelessly and with the USB cord untill either I turn it off and back on or it shuts down by its self… When you try to print after it is turned back on it will not do anything.. it used to turn its self back on when I would print wirelessly but now it will not.. the blue wireless light is on lik eit is connected to the network router.. Doe anyone have any ideas.. I am using XP-pro… VMware Training in Chennai | VMware Training in Chennai | VMware Training in Chennai

How to Identify and Fix Common printer Problems ?

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

You can visually inspect the remaining cartridge levels on your printer. If they are full but you still cannot print properly, check the cartridge`s expiry date. Expired ink cartridges often dry up which causes problems in the print results.
The printer is either low in toner, the density is set too low, or the Economode may be turned on. Remove the toner cartridge and shake it. This will redistribute the toner and often will temporarily solve the problem. However, this usually indicates it is time to install a new cartridge.
You may see a “printer offline” error if your computer can`t communicate with your printer. This can be caused by loose cable connections or an outdated printer driver or operating system. The HP Smart app (below) can automatically diagnose and resolve printer offline issues in Windows operating systems.
You need to ensure your HP printer has enough paper, ink, or toner, and it is not stuck on paper jam. Also, check the status of your printer cartridge and try replacing it with a new one if it is not good enough. In some cases, your HP printer stops printing after you replace its parts.
This will turn your printer to its original default settings. Now jump to the file you want to print and click the “Print” option. Move your cursor and click on “Properties” and then the “Color” option. Here, choose the option “Print in Grayscale” by just hitting on its checkbox.
Verify the ink cartridge(s) is inserted properly. Some cartridges snap in place, and if they are not inserted fully, the printer won`t print anything. If a lever is moved from its original position to allow for installation of ink cartridges, ensure it is returned to its original position.
Start by checking your hardware

If you`re using a wired printer, make sure that the printer cable is properly connected from the printer to your PC. For wireless printers, check the wireless connection. Make sure the printer`s wireless option is turned on and available.

Check for Loose Cables and Network Connection

A temporary power outage, even one that lasts only a few seconds, could have been enough to knock your wireless router off the network. Rebooting or otherwise resetting the modem or router should fix the problem and bring the printer back online.

Unplug and restart your printer

Turn off your printer and unplug it, wait 30 seconds, plug your printer back in, and then turn the printer back on.

Go to Control panel and then Devices and Printers. Find and right-click on your printer and click on Printing Preferences. Go to Quick Setup tab and then select Grayscale.
You do not need to replace ink cartridges until you are prompted to. In general, low ink levels should not impact print quality. Your printer stops and displays a message when ink levels get too low. However, the printer might still perform a limited amount of printing in `backup mode` at low ink levels.
Remove and reinstall the indicated cartridge slots 2-3 times until it firmly sits in place to override the HP ink cartridge error. After doing this, turn off the printer and remove all the cartridges. Take a dry cloth to clean the contact on the cartridge and carriage to remove any dirt or residue.
Clean the printheads: Sometimes the issue why you are unable to print in color is because our printheads are clogged with ink. Clean the printheads and then print a document to check if color printing works. Some printers also have in-built programs that can clean themselves so remember to check for that.
First of all, open the Print preferences and go to the Paper/Quality tab (for HP printers). Make sure that the Color option is selected here instead of Black & White. If the Color option is missing, click the Advanced. In the Advanced Options window, set Off for Print in Grayscale under the Document Options section.
Even if your cartridge is full and ready for action, it may have become slightly dislodged and no longer in full electrical contact with the printer. The easiest way to rectify this potential problem is to simply remove and reinstall the cartridges.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Printer not printing
ANSWER : Try removing the inks, turn the printer upside down and shake it and see what falls out.

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HP Color LaserJet 2550L

Printer does not print after power off
ANSWER : Hello .. I have a problem with my HP1102w printer.. It had worked fine for a while.. But now it will not print after it shuts down.. I have reset it to factory setting,, and removed the drivers/software from my computer and reinstalled several times using the wireless install.. but everytime it will work just fine wirelessly and with the USB cord untill either I turn it off and back on or it shuts down by its self… When you try to print after it is turned back on it will not do anything.. it used to turn its self back on when I would print wirelessly but now it will not.. the blue wireless light is on lik eit is connected to the network router.. Doe anyone have any ideas.. I am using XP-pro… VMware Training in Chennai | VMware Training in Chennai | VMware Training in Chennai

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HP Color LaserJet 2550L

Epson Stylus sx130 Printer does not power on…
ANSWER : I have had the same problem with Epson px660. I have replaced the main board twice with the same problem recurring after printing many copies of documents..there are some transistors at the back of the main board which when removed the printer will power on but will not recognize the cartridge..so I’m still wondering of the power supply is short circuiting the main board…a

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HP Color LaserJet 2550L

when printing front and back, the front will print well but the back will fade
ANSWER : It happens because second side voltage is much higher and the board breaks. Are you getting this issue in auto duplex only, or same error you are getting when you print second side manually?

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HP Color LaserJet 2550L

Printer won't print
ANSWER : Wow, you’re just a wealth of information. Take it in for service or buy a new one.

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HP Color LaserJet 2550L

Printer is printing everything in green
ANSWER : My printer is an Epson Stylus SX535WD

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HP Color LaserJet 2550L

Difference Between Laser Printer and InkJet Printer
ANSWER : Laser uses toner which is a powder that gets melted onto the page. Inkjet uses ink that gets squirted onto the page.

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HP Color LaserJet 2550L

HP Officejet 860 printer printing blank pages
ANSWER : First check the exact ink levels, replace if any one are low or empty.

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HP Color LaserJet 2550L