HP Deskjet 2540 Hard Reset
Your printer needs to remain turned on before performing you perform a reset. Note the settings of your printer, as they will be erased once the reset is complete. Remove the power cable from the deskjet 2652 printer’s rear. Wait for about a minute. Re-attach the cord to the 123.hp.com/dj2540 printer and wait until it turns on automatically. If it doesn’t switch on, you need not worry; just push the power button. The reset process completes once the printer turns on.