Can't boot hp pavilion gaming laptop 15-dk0090ur

[MikleZZzz]

Hello! I've got my HP Pavilion gaming laptop 15-dk0090ur (serial number is cnd9465rww) unable to boot from any media.

This morning I noticed that the laptop was on but the screen was blank and with no reaction to any buttons.

So far I have tried different restoring procedures as holding Windows Key + B (did bios restore but no luck with booting), making different system checks (motherboard, storage, RAM, CPU and etc, everything was passed).

I've also tried to boot from a different USB stick with Ubuntu 20.04 image, but no luck - it hangs with a single underscore character printed on and I'm 100% percent sure the USB stick is fine as I was using it to install OS to a different laptop a week ago.

What else I did was resetting RAM and checking other cable connections (like NVME disk).

Need help in bringing it back to life asap or at least in diagnosing what is wrong to get a spare part.

Thanks in advance.

[WAWood]

@MikleZZzz 

The single flashing underscore means that you attempt to boot from the Ubuntu USB stick failed -- as that screen indicates it was still trying to boot from the hard drive.

This usually means the drive has failed -- so did you check the drive using the HP diagnostics?

[MikleZZzz]

@WAWood thanks for Your suggestion. It is strange but it seems it was some kind of Windows boot process issue. The boot process is so unclear, without any console logs, a complete disaster. What I did was running a complete system test for a couple of times (no errors, all checks were passed). After all, it started booting ok, maybe with a little delay, but at least it works now. Thanks.