By heddo - 04-11-2012 23:25
BIOS settings are the settings that your computer boots up to, on start up, your PC runs through the setting preliminaries, you can change the BIOS settings by pressing a certain key as your PC is starting up, this gets you to the preliminary setting (BIOS) set up screens, you can tinker with stuff, such as boot order, or you can remove stuff, or return the settings back to standard, factory settings, it sounds like the repair man has given your hard drive a clean and re set it, and he has looked at your BIOS settings, and put them in the order that he thinks they should be to aid your PC on start up..