Keyboard & power light is lit but screen is dead and pressing F10 repeatedly on startup doesn’t work

[Tweeksta]

Keyboard & power light is lit but screen is dead and pressing F10 repeatedly on startup doesn’t work. I have tried also pressing esc repeatedly on startup but that also doesn’t work. The lappy is also reving hard. I can’t boot up from an external drive also because the screen does not turn on

[WAWood]

Here's a video from HP Support about troubleshooting a laptop that does not power on or hold a charge:

https://www.youtube.com/watch?v=MgDy0h9a7Jg

Here's a video from HP Support about diagnosing the issue of the laptop starting but having a black screen instead of any display:

https://www.youtube.com/watch?v=sj6kYmT7GLs

[Tweeksta]

Hi wawood

ty for ur reply. I have tried all 3 options except for the option where u removed the memory module because I don’t know where it is on my pc

[Tweeksta]

when I turn on the pc the capslock key and F10/numlk key flashes simultaneously 5x

[WAWood]

For HP laptops, this thread describes the different beep and blink codes:

https://support.hp.com/th-en/document/ish_1997719-1528356-16