Thanks for your answer, unman.
Are we sure that no bios corruption can withstand a hardware flash ?
I know that my attackers hacked my internal webcam and microphones and stole datas of my drive. They also were able to spy my web activity and to “play” with my web connexion, my box, the screensaver display, as well as the (noisy) fan which they had fun pushing it to its maximum a certain number of times in a row, etc. Actually, I am pretty sure that they are still hacking me, spying my web activity, probably able to see what’s on my screen to bypass my vpn protection. I am pretty sure that they have hacked my smartphone too. And all of this, without having physical access to my machines.
It’s a rather complicated case of cyber-harassment which has been going on for months, and my “enemies” evolve in the field of computing at a good level of skills…
How could I protect myself from this kind of hackers ?