There’s a lot of these problems in the forum, search and do some reading.
Two ways to solve this:
OR
There’s an image for the 8 MB chip containing FD and a ‘fresh’ ME (state ‘configured’) ‘hidden’ in Asus bios updates:
‘Extract as is’ should give you a file precisely 0x800000 in size which can be written with a hardware programmer directly to the chip. Older version, so one would need to run the latest ASUS ME update afterwards.
(If ever a fTPM was in use it might’ve been used for disk encryption - be sure to have recovery information at hand)