mark wrote:
the first time I used a screwdriver to extract the chip and after that I used some filament underneath the chip to plug it out.
How thick? Are you 100% sure that the chip actually has good contact in the socket? Maybe try the factory BIOS without that filament once.
the only lifesign is the onboard network chip which establishes a link to my switch.
That's completely independent of coreboot or BIOS.
//Peter