Update : turns out its a dead bios chip , replaced with other 128Mbit / 16 MB and worked just fine...

Hi , technically my first post here, I am trying to bypass the Amazon Chromium firmware for multiple M170q's
I Used the bios file in this thread ( by peste) and 6 of the 7 PCs worked fine , they are all identical with minor differences in bios chips, the 7th PC won't post , it powers on as soon as I plug in the DC jack , I tried to flash the bios many times with the exact same file I used for the rest 6 PCs but no luck , any ideas?
I Used the CH341A programmer...