T14 Gen 1 might be bricked?

[Olwe]

I ran memtest and discovered that my added RAM was bad. I took it out and re-ran memtest and the on-board 16gm was error-free (although I interrupted the test). But then when I tried to reboot, I keep coming to a "can't find network", then a white BIOS-like screen with options Boot Menu and App Menu. The Boot Menu has just three choices

NVMe: WDC PC....
> PXE Boot
Lenovo Cloud...

and it won't accept my NVMe0 choice, it just keeps coming back to this screen. I then took out the coin battery and restarted. I understand that resets the BIOS to factory. I restart, but I get just the Boot/App Menu screen. I'm stuck. I did a diagnostics and it was fine. What's going on? Is this bricked? I did have Debian on the 1tb M.2 drive and it was working fine.