dell330 how to enter bios interface?

dell330 machine according to the del key does not respond directly to the hard disk to start, f2 for stup, could not find cd start.'s statement said that the F12 can go in to see, but I do not see that the machine has no access to bios interface No cd set from the start? What else can they do it? By the way, before re-once, what is the tomato home, a friend of equipment to help.Now there is no way to a friend suggested I removed the hard drive to change to another machine installed But I do not want to, do not know if there is no way to resolve such questions, thank you for the help!

is F2 to enter BIOS settings.
a Boot Sequence of the options, with the U key to the election of the first CD-ROM Place to start.
By another F12 directly into the Boot Menu, you can also choose to drive the direct interface to start.