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HP Recommended
HP ENVY 4500 A9T80A
Microsoft Windows 10 (64-bit)

orange backgroung wirh blue-circled hp in white letters keeps blinkingeach second after a half-hour.

1 REPLY 1
HP Recommended

@fengxiao Welcome to HP Community!

 

Please perform the hard reset and check.

 

Turn the printer on, if it is not already on. 

 

Wait until the printer is idle and silent before you continue. 

 

With the printer turned on, disconnect the power cord from the rear of the printer. 

 

Unplug the power cord from the wall outlet. 

 

Wait at least 60 seconds. 

 

Plug the power cord back into the wall outlet. 

 

Reconnect the power cord to the rear of the printer. 

 

Turn on the printer, if it does not automatically turn on. 

 

Wait until the printer is idle and silent before you proceed 

 

Also, update the firmware and check.

 

Keep us posted,

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Give us a virtual high-five by clicking the 'Thumbs Up' icon below, followed by clicking on the "Accept as solution" on this post, 


Have a great day!

 

 

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