The printer is preparing to print if the Power indicator is flashing. When the HP printer light blinking won't print has received all data, the indicator stops flashing. An open cartridge door is indicated by a rapidly blinking light. Fast flickering power lights indicate that the printer is malfunctioning. The flashing resume light indicates that there is a paper jam or that the paper tray is empty.Also check the status of your printer cartridge and try replacing it with a new one if it is not good enough.
What to Do When Your Printer Won't Print:-
Check Your Printer's Error Lights.
Clear the Printer Queue.
Solidify the Connection.
Ensure You Have the Right Printer.
Install the Drivers and Software.
Check that Paper Is Installed (Not Jammed).
Fiddle With the Ink Cartridges.
This method is simple and works in most cases. Follow the below-mentioned steps to fix the HP printer light blinking issue:
Step 1: The first step is to carefully remove the ink cartridges from the printer panel.
Step 2: Once done, from the side of the HP Printer disconnect the power cord and disconnect it from the outlet as well.
Step 3: Disconnect the USB cord as well (In case it is connected).
Step 4: Once done, wait for few seconds (Say 15 seconds).
Step 5: Press the power button of your HP printer.
Step 6: Reconnect all the disconnected wires including the power cord and the USB cord (if using).
Step 7: Turn on the Printer and wait till it starts to print.
Step 8: check if the lights are still blinking or it stops. If the lights stop blinking, it means the issue has been fixed.
Hope this works for you,