Acer c720p: seabios is gone after enabling write protection

[Yannick]

Hi,

I'm the one who tried to help Carmelo. Unfortunately, after I opened
this machine (Acer c720p, french keyboard) and removed the screw to
enable writing on coreboot, it now refuses to access to seabios if I
press CTRL + L has I did before so many times. I've put the screw ack
in, it's still the same.

Thus the fedora 20 I installed is now out of reach.

If I wait ~30 seconds, I've a second white screen proposing to reinstall
ChromeOS using USB or SD. I hope I someone here can save me the trouble
of reinstalling ChromeOS, then wipe it again, then reinstall Fedora 20
and reconfigure it...

ATM i'll go for a good glass of Cognac VSOP (with all due respect to
those finding alcohol offensive).

Best regards,
Yannick