Using your bios is nothing rocket science and you should be able to do it if you try some options around the time setting options.
I have one question about BIOS. We usually say BIOS is a ROM (Read Only Memory). Is it really ROM? If yes, then where do we store the BIOS settings. Because whenever there is not hard disk attached, even then BIOS settings can be changed. Where these settings are stored as BIOS can't store it in itself as it is a ROM ?