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Jun 5, 2019 · Only green light on power ThinkCenter M920 Tiny: damaged bricked BIOS, how to initiate BIOS recovery (CMOS jumper, ISO, USB) No, removing the coin battery won't force a BIOS update via a USB drive or USB CD drive, which is what needs to happen (initiated by moving the jumper.)

https://forums.lenovo.com/topic/findpost/1092/3341509/3343374 Windows retrieved an update recently to update the firmware on the edge 2 laptops.