Re: Compaq 'security'?
"For most home machines, you can simply reset the CMOS (battery or jumper) or use a master code calculated from a hash displayed when maxing out password attempts."
If it's a desktop Intel MoBo, you just change the CMOS jumper from 1-2 to 2-3 and power on. It boots to the BIOS config screen with an extra menu item, top left, where you can remove/change the power on and BIOS passwords.
It's all about levels of security. Most cases have a loop you can padlock, some have a key-lock, some have neither. It depends on the level of security you require. Using something like bitlocker to encrypt a drive gives a great feeling of confidence, and for most use cases, that confidence is probably justified. Someone really determined might just break in and replace the ROM with something a little more co-operative to nefarious acts or find some other way of getting some malware onto the system, maybe by hacking in via the Management Engine or something. Levels of security (and cost thereof) needs to be commensurate with the value of the data being protected.