My hp 4520 is not showing home screen

[Homerjj]

Can not turn on and off

no screen 

only showing light int the screen

[Nal_NR]

Hi @Homerjj,

Welcome to the HP Support Community. 

I'd like to help!

I understand you have issues powering on your printer.

Have you tried checking with a different power chord or a different wall outlet?

As you mentioned you have issues powering on your printer.

Try the steps recommended below.

Turn on the printer.
Wait until the printer is idle and silent before you continue.
Disconnect the USB cable from the rear of the printer. If your printer has a network or wireless connection, leave it connected.
Remove the ink cartridges from the printer.
With the printer turned on, disconnect the power cord from the rear of the printer and from the wall outlet or power strip.
Wait at least 60 seconds.
Plug the power cord back into the wall outlet.
   NOTE:
HP recommends connecting the printer power cord directly to a wall outlet.
Reconnect the power cord to the rear of the printer.
Turn on the printer, if it does not automatically turn on.
The printer might go through a warm-up period. The printer lights might flash, and the carriage might move.
Wait until the warm-up period finishes and your printer is idle and silent before you proceed.
Reinsert the ink cartridges, and then close the ink cartridge access door.
If you receive a prompt to print a calibration page, do so.
If you disconnected the USB cable, reconnect it to the rear of the printer.
Try to print.

Test the printer Power button
Plug the printer into a working wall outlet, and then test the Power button on the printer.
Make sure the power cord is connected to the rear of the printer and is plugged directly into a wall outlet.
Press and release the Power button to start a Power On/Off cycle. Do not hold the button down.
   NOTE:
If you press and hold the Power button too long, the printer might turn on and then off without restarting. If this happens, press and quickly release the Power button again.
If the printer does not turn on, wait 10 seconds, and then press the Power button again.

If the issue still persists after trying out the steps.

It is a hardware issue with your printer.

Hope this helps! Keep me posted for further assistance.
Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!

[Nal_NR]

Hi @Homerjj,

We haven’t heard from you, this post is in reference to the thread you created on your friendly neighborhood (HP Support Community).

I would like to know if the resolution we provided worked for you.

If you have any other queries, feel free to reach out to us.

Give us some reinforcement by clicking the Accepted Solution button, that'll help us and others see that we've got the answers and did reply to you!