How to get into BIOS on Campaq?

Normally when you boot a computer up, within the first few seconds a message comes on the screen that says something like 'Hit F10 to enter BIOS'. Sometimes it's F12, sometimes it's DEL, depends on the system. See if you can see the message and follow the prompt, if not, try any of the above keys as soon as you boot up and see if it lets you in.