attention and power light are flicking on my hp LJ m15w

[ashfoxmi]

i installed the wrong firmware on accident

now the printer refuses to give or get any orders 
it cannot be detected on hp scan doctor 

the attention button doesn't work

only thing that works right now is the power switch

[Nal_NR]

Hi @ashfoxmi,

Welcome to the HP Support Community. 

I'd be glad to help you! 

I understand that you are having issues with the blinking lights.

Reset the product

• 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 printer.
• Turn the printer on. HP recommends plugging the printer directly into a wall outlet.

Try the steps in the document -HP LaserJet Pro M14-M17 Printer Series - Blinking Lights

Hope this helps! Keep me posted. 

Please mark this post as “Accepted Solution” if the issue is resolved and if you feel this reply was helpful click “Yes”.

[ashfoxmi]

according to your document y case is not there 
referencing the document you sent, 2 and 3 are blinking and the printer does not take any order anymore

and will not connect to a computer

[Nal_NR]

Hi @ashfoxmi ,

We apologize for the inconvenience, but it seems that the issue persists even after attempting the troubleshooting steps mentioned above.

This might require one-on-one interaction to fix the issue via remote assistance. 

I've sent you a private message with further instructions. In order to access your private messages, click the private message icon on the upper right corner of your HP Support Community profile, next to your profile Name or simply click on this link.

If the information I've provided was helpful, give us some reinforcement by clicking the Accepted Solution button, that'll help us and others see that we've got the answers!