Some people try to configure their computer to run faster than it was designed to do. This is called "overclocking". Since the BIOS controls the computer processor, entering the BIOS setup screen while it is booting up gives people access to advanced computer settings. For most computers, pressing the delete or F12 button while the computer is booting up will bring up the BIOS setup screen. There are many ways a computer can be overclocked to run faster, but most involve simply turning up the speed of the computer processor. Doing this will usually make your computer run much hotter, though, and can sometimes break your computer, which is why overclocking will usually void your computer's warranty. Only people who are computer hardware experts should attempt to overclock their computers.