Red light flashing, And little cartridge symbol on printer screen,

Have you tried unplugging the printer from the wall for 5 minutes to reset it? If that doesn't work you either have a defective ink cartridge or the printer is defective. Due to the very low prices of new printers replacing it in almost all cases is the cost conscious thing to do.

Can you see any symbol when the red light flashes? or any message pops up on your computer? Since your problem's description isn't very specific, I am unable to assume myself. If cartridges are replaced with new ones and the problem persists, it's possible that there's paper jam or carriage jam or contacts on the printer is bad/dirty. While the machine is On, lift up the front access door and try moving the carriage manually. Please follow this LINK to clean the contacts.
Please post back with more specific details so that I can help you better. Good Luck.

A red FLASHING light means there is a minor problem with the unit.
According to the manual there are two options at this point; 1. read the error on the display and solve that problem or 2. The toner is almost empty and needs to be replaced. (you can see which toner is low according to the toner status symbols on the display and just try taking that cartridge out and GENTLY shifting it from side to side a little.) You can tell which toner cartridge it is becasue there will be an arrow in the display above it. Hope this helps.

An '0x ...' Error Message Displays on the Front Panel When Printing HP Photosmart C5380 All-in-One Printer - HP Customer Care (United States - English)

If you need more help come back.

Post / thumbs / testimonial are welcome!

it is the problem your printer motherboard

0x error codes indicate that the product has an internal error. Try to reset the printer:

1. Without turning off the product, disconnect the USB cable from the rear of the product.
2. Remove the cartridges from the product.
3. Wait for the 'Insert Cartridges ' message to display on the control panel.
4. Disconnect the power cord from the back of the product.
5. Wait 60 seconds.
6. Reconnect the power cord. If the product does not automatically turn on, press the Power button
7. Reinsert the cartridges, and then close any open doors on the product
8. If you receive a prompt to print a calibration page, do so.
9. Reconnect the USB cable to the rear of the product, and then try printing again.

From the HP website:

ISSUE: The printer displays an assert error code. Assert error codes indicate that the printer has an internal condition that may respond to a hard reset of the printer. Beyond that, service may be required. This document applies to the following products:

• HP Photosmart p1000/1000, p1000xi printers
• HP Photosmart p1100, p1100xi printers
• HP Photosmart 1115 Printer
• HP Photosmart 1215, 1215vm, 1218, and 1218xi printers
• HP Photosmart 1315 Printer

SOLUTION: Hard reset of the printer A hard reset of the printer may clear the error. Here is how to perform the hard reset:

1. Shut down the computer.
2. Open the top cover of the printer and remove the print cartridges.
3. Close the top cover of the printer.
4. Press the power button on the printer to turn the printer off.
5. Disconnect the communications, (USB or Parallel), cable from the back of the printer.
6. Disconnect the power cord from the back of the printer for one minute.
7. Reconnect the communications cable to the printer.
8. Reconnect the power cable to the printer.
9. Press the printer power button to turn the printer on.
10. Open the top cover and reinsert the print cartridges.
11. Close the top cover and print the calibration page.
12. Restart the computer.

Solution to your problem

Check the ink levels, and that there is not a paper jam.
if nothing of those two, try uninstalling and re-installing printer drivers. sometimes you can unplug the printer for 20-30 minutes. which may enable it to reset to it,s default settings. if this does,nt help. refer to the user manual.
good luck Mike @ Compurepair.

As the previous message stated, I had the same problem and it was resolved by making sure that I used the original power cable. I couldn't find it at first and tried with three others all with the same error. Finally it was resolved by using the original.