I need this bios file as well. However, I am not having any luck with the files in this thread. I purchased this M73 tiny used on ebay. It was working fine, then I performed a BIOS update from within Windows using the Lenovo utility. After reboot, the system is stuck at press F1 to continue but the keyboard doesnt work. I used a CH341a to apply the files in this thread. At one point my system came up into PXE boot consistently but I could not get into the BIOS. Is there a "factory" bin file I can apply to my system? I am attaching the BIOS backup I captured before I started messing around.