Hp pavilion 15 not booting

[Pv23]

 Only hdd light glows and battery indicator glows when plugged in

This happened very suddenly

[Chimney_83]

Greetings @Pv23, 

Welcome to HP Forums and Thanks for the post. 

I understand that you can see the HDD light blinking and battery indicator responding but there is no display, is that right?

Not to worry, I will be glad to help. 

Have you tried any troubleshooting steps on your own?

Recommend you perform a power reset on your computer. 

Disconnect any devices connected to your computer. 

If you have any USB or DVD in the computer, please disconnect it.

Perform a power reset on the computer. Click here for assistance. 

Disconnect the adapter, remove the battery (if it can be removed)

Hold down the power button for 30 seconds to drain the static in the computer. 

Connect the adapter and battery to the computer. 

Turn the computer ON and keep tapping F2 or ESC repeatedly on startup. 

This should get you to a Startup Menu and from there you can select System Diagnostics. 

Please select system diagnostics and run a system test. Click here for assistance. 

If the test fails, please contact our phone support for the service options.

If you do not get any display, perform a power reset again. 

Then the computer ON while holding the Win + B keys on the keyboard to restore the BIOS on the computer. Click here to know more. 

For other troubleshooting steps, please refer to this HP Article for assistance. 

Let me know how it goes. 

[Pv23]

Have done power reset before it still shows the same thing and does not switch on

[Chimney_83]

Thanks for the reply, if you have tried to restore BIOS and the issue persists, please contact our phone support for the service options available. 

Keep me posted. 

[dassie]

Thanks for this info. Holding down power button and pressing Esc worked for me.