My PC Won't beep, or flash and error code or boot but it gives power

[MrBruhFortnite]

Hi, When I plug my laptop in it gives the battery power but when I press the power button no beeps, lights, or booting process happens, please help me 😞

[WAWood]

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

[WWIA7062]

Hello, MrBruhFortnite (also MrBruhFortnite1 since HP community glitched and kicked him out) has requested me to try to fix the issue and I put up the post but I wanted to say that the PC itself doesn't POST or get to the bios in the first place, removing the ribbon cable from the SATA board allows it to slow blink nonstop (but unfortunately it didn't give any of the codes) but keeping in won't even let it get that far at all, any ideas for me to find the problem and fix the issue (I would use the newest version of the UEFI tool that I installed for him days before this ever happened but it won't go that far with the SATA board connected or not, IDK what the issue is.)