Welcome to the HP Support Community. I'd be happy to assist you with the blinking LED issue.
Let's try these step to reset the printer -
1) Take out the cartridges.
2) Unplug the power cord from the printer & wall.
3) Wait for 30 seconds.
4) Plug the power cord back into the printer and wall, ensure the printer is plugged into the wall & not to a surge protector.
5) Insert the cartridges back into the printer.
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Have a great day!
Asmita I am an HP Employee
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