Put your PC into a slick ATX case

With our Lian Li chassis, hard drives and optical drives screw directly to the frame. Whether your case uses this method or drive rails, the drive should slip easily into the case from the front and align with the face (except your hard drive, of course, which slides in from within the case itself). With the drives mounted, reconnect all data cabling and power connectors, following your paper tags. Don't forget to reattach the case and CPU fans.

Next, bundle unused PSU connectors and unruly cables with twist ties. This will keep things tidy and aid proper cooling. Now, button up the case; reattach your keyboard, mouse, monitor, and power cord; and boot up your computer. Everything should work as before. If all's well, power down, open the case, tear off your paper flags, and start bragging to your friends.