Protection of the information nowadays plays a huge role. However, if the BIOS can only protect your computer from unauthorized access by not very sophisticated users. Generally, protection in BIOS – it is rather a relic of the past rather than a real need. While on the other hand, the protection at the BIOS level can put some barrier for unconscious internal BIOS settings changes by curious children. And thus protect your computer from “spontaneous” overclocking.
In the arsenal of BIOS there are several possibilities of protection: password protection of computer boot, password protection of changing BIOS settings, hard drive boot sectors protection, floppy disk lock and read-write hard disk lock.