preboot authentication

[CptAwesome]

Hy guys
I have a little project i need help with. i want to add an authentication to my pc that will run before the boot options and before i can choose to enter bios(authentication means either password or certain key presses). now i have done some research and got some recommendations but it didn't help me much. the best thing i found was Bios Interrupt Service Routine (ISR) and i wanted to check if it might work this way


thanks in advanced

ps:no funny business(hacking, cracking) here, just for my own security. a lot of people think i want this so i can write a low level virus!? that will lock people out of their pc. Nope!

i want to lock people out of my laptop. i want to write it for one chipset, one bios. it's just for my laptop security.

 

[IPGuru]

How do you expect to get this code to run befroe the PC boots?
without re-wrighting the Bios rom chip (usualy Eeprom) to insert your code I dot see how this would be possible

Many PC's hav an option to passsword protect the Bios* this would prevent yu users from chaanging the boot options & enable you to continue with std security options



8 unfortunatly this is usualy resettable with a jumper on the mottherboard so physical access would need to be retricted, but with Physical access any password preotection method could be circumvented anyway ...


Do things on the cheap & it will cost you dear