JohnthePilot

Hi and welcome to TSF.
Follow these steps.

• Shut down the operating system and turn off your computer.
• Press and hold down the F1 key, and then turn on the computer.
• When an IBM or other logo is displayed or if you hear repeating beeps, release the F1 key. The IBM BIOS Setup Utility will start.
• Select "Start Options" from the first menu.
• From the Start Options menu, press <Enter> on the top bullet labeled "Startup Sequence" (it is above all the other options). This brings up a new "Startup Sequence" menu.
• Change boot order as needed using arrow keys.

Then have a look at this article.