Hello!
yesterday I received from eBay a Lenovo M92p TINY model 3238 system with 4GB of RAM and a 500GB mechanical HDD.
I tested it and it worked fine, it booted to a fresh Win10 x64 French OS .
The plan was to replace the mechanical HDD with an SDD one and upgrade RAM to the max 16GB since I had 2x 8GB SODIMM modules.

I noticed that there was an update on the Lenovo support site so I thought I'd do that first and then proceed with the upgrades and installation of new OS.
The windows BIOS update completed successfully and the system booted to a bios-like screen and continued the update. On 100% the system tried to reboot but this was not successful, it just looked frozen. After 10mins I power-cycled the system. But I have lost the ability to boot *any* kind of media. I have done several CMOS resets, BIOS defaults, tried various combos of secure boot options but nothing helped.

With the previously working HDD the system freezes on the LENOVO boot screen.
With a UEFI bootable USB stick the system just black screens and I can see mouse pointer that I can move at 10fps or something.
With a MBR bootable USB or a win10 DVD install disk stick I get a blinking underscore without any media access.
Same blinking underscore with the Lenovo "Bootable CD for BIOS flashing" , the emergency recovery procedure explained in the hardware manual also does not work.

What I can do it enter BIOS, call up boot selection menu or even enter the Intel ME "bios" with CTRL+P. But other than that nothing can boot on the system be it windows or dos or even linux.
The system does not even try to access the drives to boot from.

I am all out of ideas so I just desoldered the 3 bios chips on the mobo in hopes some kind soul can provide me with fixed binaries or some solution.... as-is the system is a paper weight :(

thanks in advance for any help/tips!!!

Edit by Fernando: Thread title shortened