My hp laserjet mono printer model 1018 suddenly stopped printing.  When I switch it on, the green light  lights up and remains lit up as it always does.  However, when I try to print, the red light does not SHOW and the printer will not work.  All connections have been checked and there is no paper jam. Can any benefactor help PLSE? Am an oldage pensioner and often feel frustrated with computer navigation.  GRATEFUL JOEHave you verified that the toner is still AVAILABLE?truenorthhttp://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&taskId=110&prodSeriesId=1814092&prodTypeId=18972&prodSeriesId=1814092&objectID=c00602233Guzeppi,I acknowledge your PM to me and as i stated i am replying to your question as a part of this thread hopefully for your benefit and perhaps  a benefit to other CH members. If you are inquiring about whether there is still toner available for printing it might be because you have never CHANGED the toner cartridge. Depending on how long you have been using this printer and how much printing you have done with it you may be out of toner.The toner is a consumable essential to your being able to print. They do have a life SPAN and will need to be replaced when their liquid is exhausted. Your manual will indicate where it is located and how to remove and change it. However given CC's link i urge you to read it closely and see if any of the issues that the link deals with may be causing your issue BEFORE you replace the toner cartridge. I would also see if your manual indicates what if anything by way of advisory or warning that the printer creates when the toner is exhausted. I would expect that the printer would produce some advisory to replace the toner. truenorthMany thks for your kind replies, but it is not a toner problem.  I had the printer checked by a  qualified technician this afternoon and it worked well in his laboratory.  He printed a test page which came out perfect; I now have the printer back home and the tech suggests there might be something wrong with my computer, but how come the colour inkjet printer works well?  The mind boggles.  Many thks again.  JoeHave you tried re-installing the printer driver?Given that i appears that you have more than one printer associated with your computer this issue can be caused by your NOT having the laser printer designated as the "default " printer. Have you checked on that possibility?truenorth