20 Most Recent HP Photosmart 8450 InkJet Printer - Page 8 Questions & Answers

If the ink is genuine HP ink and it is the correct type for the printer, HP should replace it if it is defective. If it is an aftermarket ink cartridge that the HP printer won't acknowledge as valid, go to the sellers website and see if there is a procedure you can do to make the cartridges work. Many reseller have these procedures since only genuine HP cartridges will normally work right out of the box. Otherwise all I can say is, if the price is too good to be true, it probably is. The reason printers in general are so inexpensive is that the manufacturers recover the loss in the ink sales. They are not going to make it easy for you to use someone else's product and deprive them of the recovery of their costs.

YES you can

Depending on the exact model, you can download them here: http://www8.hp.com/us/en/drivers.html Drivers Downloads

Most likely the sensor in the back of the paper tray slot is damaged.

scan it first .then save in file then select file and click to print.

Clean where the cartridges go. there are many contacts in there for each cartridge. this may not fix the problem however, in that case the printer will need to be disassembled by a technician and really cleaned. it might be cheaper to replace the printer.

Your printer software should have an enlargement feature. If not, print he photo then copy it using enlargement feature.

Which model number, please?

The expiration date should not be of any problem. When the printer has an issue with the cartridge, it could be the contacts in the printer or on the print head are not clean or shiny. It looks as a communication problem. When the printer does not give an error, you just won't get black the hear must be cleaned. OR when cleaning does not help we need a hefty measure. When the print head is not on the cartridge, and cleaning does not work, remove the cartridge and let a drop of cleaning fluid fall in the nozzle, where the ink should go in. place the cartridge back and let the printer print a few pages of black. (just some text pages with black bold type face would do. Let it print till you see the printer is starting to show text, Then again do a clean cartridge and the printer should be fine for a while.

Don't forget the WiFi maybe password protected

common problem on this equipement do try this if you already cleaned head contact on cartridges with no success INSTRUCTIONS: 1. Simultaneously press both the X button and the power button and hold 2. (NOT simultaneously) press BLUE button then GREEN button then GRAY button (in that order) 3. using blue (or grey) button, scroll-seek to the "information menu" - press OK button 4. press grey button once for "checksum for relock data input" - press OK button 5. press (X) repeatedly until you return to the normal main menu 6. PRINT

Same thing just happened to my fairly new 7520 Hp. I shut my machine first with the shut off button and then unplugged it for about 5 minutes. Sounds like you tried this and I believe this did not work for me either so I just went into the HP official site and downloaded my printer again. Downloading your printer from their site is easy and quick instead using the cd. It automatically removed my old printer and installed the printer again. The problem has not returned. Another problem I just had and because I think one of my new cartridges (yellow) is somehow damaged. I got a black line down my pages with a note that my yellow ink is missing. Had black line only when printing and not copying. I reinserted the yellow ink and took a light damp qtip and slightly wiped the machine screen on each ink cartridge.(this screen meets the new opening from each new cartridge. The black line left. Hope this helps. .

Check at the cartridge end of the machine. I found a piece of paper jambed in that kept the carrige from parking on the right side. I had to turn off printer. take the paper trqy out and turn the machine on it's right side and use a flashlight to find it and get it out.

The error means PrintHead Failure / Ink system Failure Hardware error Try removing the printhead (If removable) and clean the contacts on it, if it doesn't works there are no ways to fix this error ADCSFXworks Printing Center <3