20 Most Recent HP LaserJet 3050 All-In-One Printer - Page 7 Questions & Answers

here is the manual of your printerhttp://h10032.www1.hp.com/ctg/Manual/c00495173.pdf Page 172 and down maybe will help you

Another way is to go to yourTo remove printer. Click on start button and go to control panel click on programs and features. Look in the list for the printer you want to remove. Click on it to highlight it. Go to top and click on remove. It will remove it, if it asks if your sure click yes. This should take care of your problem.

low the level of density

Hi Charles,There is a Firmware update available for HP Laserjet printer on HP website. Check the details about the Fixes it has on your printer. Download the Firmware and try to print, it should fix the issue.HP Laserjet FirmwareAnd regarding the printer not accepting A4 Size document. I would recommend you to uninstall the software and reinstall it on your MAC. Regards,Suhail

please open the cartridge and check and clean for cotton and re install cartridge insallah solve the problem

Hi jillhornby
Try first deleting and reinstalling your HP unit drivers , to see if the problem is coming from there .
I don't think so . Your computer is probably infected by a malware .
Download and install MalwareBytes from http://download.cnet.com/Malwarebytes-Anti-Malware/3000-8022_4-10804572.html
Let it scan your system and destroy all indesirable corrupting applications .
Best regards ,
fanaudi .

Change a laser unit .

you need a scanner