The XPS line of computers are a series of computers produced by the Dell computer company targeted towards gamers and people who need a high-end computer. If you have one of these computers and need to enter the BIOS (Basic Input Output System) of the computer when the computer starts, it's easy to do. You only have to know what key to press when the computer boots.
Start or restart your computer and wait for the Dell splash screen to appear.
Tap the DEL key a few times to ensure that the computer receives the command to enter the BIOS.
Check what settings you need to inside the BIOS screen and then press the ESC key to exit the BIOS.