HP Elitebook (2019) won't POST/boot

[NaePasaran]

Anyone anything else to try before it gets frisbee'd out the room.

Was working fine 2 nights ago, then I shut it down, placed it in my laptop bag, drove 2 miles, walked one flight of stairs, took it out protective laptop bag, placed on friends dining table, powered on and it didnt get passed the HP splash screen, and still doesn't.

Can enter the bios and ran memory and hard-drive tests and they were fine.

Took the bottom off, removed RAM, SSD, battery and CMOS and held power button for 20 seconds, re-housed them and still won't get passed HP splash screen, however the bios/motherboard did acknowledge a memory module and CMOS battery was removed.

It's running Linux Mint so tried disabling/enabling tpm, then again with legacy boot and secure boot and still not getting passed HP logo. Can find an option to boot to GRUB (Linux equivalent of sorts of system restore I think) but again, gets stuck in a loop at HP logo.

Anything else anyone can think of? Pretty skint to ideally keen to repair (or at least to the cost of a replacement of something similar). If it makes much of a difference it's plugged in 24/7 and has been for 6 years but it does goto sleep, so no idea if this could contribute to somehow "frying" something.

Thanks all

[Baldchap]

Do you still have the USB device with the Mint installer on? That's also a Live environment with some basic troubleshooting tools.

[Steve_H80]

It does sound like a hard drive failure, 24/7 for all those years is quite an ask for a domestic SSD.
As suggested above try and boot from the usb, if that works you might be able to repair the HD or reinstall the OS to it.

[the-photographer]

Try and replace the M2 with a £20 used drive from ebay

[fooman]

HP? Take the drive out and sell the rest as spares or repairs on eBay

[NaePasaran]

Thanks for the suggestions.

Must've formatted the USB drive so ordered a replacement on eBay (since GDPR it seems no company laptops accept usb which is fair enough, and no-one I know seems to have their own personal device anymore)

[NaePasaran]

eBay Linux Mint pendrive came through. Booted into live OS from the USB, ran the "boot error" app from the start menu and 30 seconds later everything is working. Note to self: keep the pendrive with the laptop in future.

[gotoPzero]

I had a HP X360 or whatever it was called. £1700 machine. Bricked itself like yours at 3 years old one night turned it off and the next morning it was dead.
After much faffing I got it running again but no keyboard or track pad so was using usb mouse and kb.
Spent another few days and put it in a cupboard before I threw it in the bin after going back and forth to win 10 / 11 and various bios versions.
Then found a thread on reddit and they said to remove as many of the ribbon connectors, gently clean and re-seat.
This fixed my keyboard and track pad.
But no longer functions as a tablet, webcam does not work and probably other stuff I dont know about.

I am 100% convinced it was some sort of software issue though. I replaced it with a Dell. HP still gathering dust in my office, I turn it on maybe once every 6 months but its basically a paper weight now as I cant trust it.