An old notebook I found in the basement always tries to boot from the network as I start it. Unfortunately I've forgotten the BIOS password.
I figured out that one USB port delivers power until Windows has booted. My idea was to cut the Ethernet connection with the power of this USB port. As I read I just have to cut the wire of pin 6 with a relay.
As all of the relays I have laying around need 7 V to work, I wonder if I could use a transistor as well, but as I am not too familiar with transistors, I am not sure how to do this.
Can anybody help me?