I had the same problem with a 128 and 64 Sandisk Card. What worked for me was to update to latest BIOS (the emmc fix one) then format the card to fat32 using rufus tool ( https://rufus.akeo.ie/) on a windows pc.
No matter what I do, I can’t get in to the shell. I have tried 2 different usb hubs, 3 different usb drives, all formatted with Rufus tool and I followed the exact guide as written above.
Twice I got “OEM1 ACPI table parse error” and then nothing.
Every time I reboot and enter bios and select my usb device, all I get is a black screen and nothi…[Read more]