probook 440 G4 - no hard disk

[smartwombat]

Out of the blue, with no prior symptoms, one of our laptops refuses to boot.

Worse than that, it denies that the SSD exists at all.

There is no hard drive installed according to diagnostics.

Windows booted from USB agrees, there are no drives to partition and install on.

Is there anything further we can do, or is this now a doorstop?

it's 2 years old, so out of warranty, and possibly BER if it can't be made to recognise any disks.

We've tried:
Reseating the SSD
Removing the SSD and using HD

Resetting BIOS to defaults

Booting from USB and using Windows Recovery

Booting from USB and using Windows boot Repair

All fails because according to the machine, there is no hard drive, whether we try to use SSD or HDD.

[WAWood]

@smartwombat 

Given the date of your post, I would have expected someone to respond to it before this -- but since that has not happened, I will take a shot at it ...

Sorry, but I don't have very good news for you ...

I've had SATA ports fail on me, as I have a file server to which I had to add a SATA card because I needed all six ports.

If the SSD is a standard SATA type (as opposed to M.2), my guess is that the port has failed -- and with a laptop, there is no way around that.

Are you able to get into the PC to run diagnostics? If so, and that does not see the SSD or an HDD, then that tends to confirm my guess.

[smartwombat]

I've tested the M.2 SSD on a USB adapter boad, and the drive is readable (although Bitlocker encrypted) on another laptop.

Since both the SATA and M.2 interfaces have failed, and the diagnostics finds no hard disk of either type, then I assume this laptop is headed for the WEEE dump.