Originally Posted by PureBoy92

2. Speed up your boot time
Reduce the time it takes to get up and running by typing 'msconfig' into the Start menu search bar and clicking through to the 'System configuration' screen. Now select the 'Boot' tab, click on 'Advanced options' and set the number of processors to two or four, depending on whether your CPU is dual or quad core.

It is a myth. It does not speeds up the computer. By default windows uses all the available processors/cores.