What happens next?

How to colour your computer
First, disconnect all cables in the back of your computer.
Make sure there are no adapters, wireless antennae, or flash drives in the back of it.
Open up the computer case and carefully remove all of the hardware.

pick from the following. A). Aside from backing up the software, you should also remove any plug-ins. Remove and clean external hardware, and place them on a clean, white paper towel to dry completely. B). Start by unplugging all of the colorful cables from everything they are connected to. Make note of where they were connected, take a picture if you need to to aide you in rebuilding the computer. C). Gently sand any metal or plastic parts in the case, including the screws that hold it together. Next, remove the connections to the main computer. D). If you have any graphics cards with needed black and white cables, be sure to disconnect them from the computer and put them in a different place out of easy access. Remove the usb cable from the back of the computer case.
B).