20 Most Recent HP Photosmart 7450 InkJet Printer Questions & Answers

Open the HP Printer Toolkit (this software was installed from the CD-ROM that came with the HP printer) and run a "cleaning cycle",
because some of the ink-jets are clogged, which results in the "all-white" horizontal lines, where some part of that line should be black.

It sounds like you have a fault with the black cartridge print-head. Converting a document to pdf makes it a graphic and all graphics are printed in colour shaded with black even if your machine is set for grey-scale. If the black cartridge has built in print-head, take it out and try pressing the head to a tissue to see if it leaves a solid "footprint". If no footprint, dip the head into a saucer of hot water for a few seconds and re-test the footprint. If you get a solid line/bar of black the cartridge should be ok if not repeat the dunking but only for a few seconds at a time. If the cartridge is just a tank that plugs onto the printhead you will need to try a couple of cleaning or "diagnostic" cycles. If still no go try placing a folded up damp paper kitchen towel under the printhead for 5 minutes. Unplug the machine power cable while the machine is busy to do this. Remove the paper pad and repower the machine. Try a test page to see if things have improved. Good luck.

Using the photosmart software, choose Clean Printhead.

Make "fast draft" your default setting, otherwise, whenever you open a new document, it will print it in "normal mode".

First things first... try connecting your printer to another pc or laptop and try printing... make sure spooling is on in the driver and there are no other programs running... if issue reappears then It sounds like your printer cartridges are the issue I would try reinstalling them... if that does not work then I would try cleaning your printer cartridge... Gather cleaning supplies: Clean distilled water. Use bottled or filtered water if distilled water is not available. Clean cotton swabs or any soft, lint-free material (coffee filters work well). Remove both cartridges. Unplug the printer. Lightly moisten the lint-free cleaning material with clean water. Clean the cartridge contacts. Avoid touching the nozzles. Replace the cleaning material if it gets dirty. If that does not work then I would try ordering some new cartridges hp photosmart 7450 ink cartridges I’m happy to assist further over the phone at https://www.6ya.com/expert/norman_d2fa496dce30c65d

open the printer door, find the cartridge you want to remove, and pull it out

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check for low ink level it need to replace the color or the black cartridge click on the printer status to see what cartridge is near empty, or you can check for pending job right click on the printer then open it if you can see that it has a pending job delete it all

Please describe more about your problem. If you've downloaded the drivers, have you installed them? That is, have you run the setup program for installing the HP7450 on the HP Pavilion computer? When you run the setup program, part of the process will search for the HP7450. Are you connecting with the USB cable and have you check that it is securely seated in both the computer and printer? Is your printer turned on so the computer can find it during the search process?

The Cd that you have might really not be compatible with the operating system that you have anymore.
Just download the latest software from the website.
1 Go to hp.com 2 Click on Support and Drivers 3 Enter your product name or number, in this case just type in HP Photosmart 7450 4 Hit go 5 Choose your operating system 6 Hit Next 7 Click on the link that says Driver - Product Installation Software 8 Save it to your desktop

You should try a couple of ink cleaning cycles.