|You have to press the proper key to get into the bios Setup.|
That's often Del if it's a generic system, F2 or F1 if it's a brand name system, but it could be a different key. Sometimes you see a line while booting that tells you which key it is - if you don't, we need the make and model of your brand name system, or the make and model of your mboard if it's a generic desktop system.
Don't hold down the key - press it repeatedly - starting early in the boot - e.g. after the first thing appears on the screen, or on a really fast computer, right after the monitor led turns to it's "on" color - often green.
If the keyboard does not work in Windows and is corded, and you're not using an adapter on the end of it's cord, try a different keyboard.
If the keyboard is wireless, or it's corded and you're using an adapter on the end of it's cord, and it doesn't work in Windows, or, if the keyboard is corded or wireless and DOES work in Windows, or if it is connected via a USB connection and DOES work in Windows, see Response 2 in this: