The Compaq Evo line of computers is a popular choice for home and office users. But no matter how you use your Evo, knowing how to open the Evo case allows you to add memory, troubleshoot problems and add additional components as needed. Opening the case is not difficult, but it does require the proper technique.
Shut down the Compaq Evo and remove the power cord from the back of the case.
Locate the two tabs on the side of the case. A small tab is located on either side of the Evo case, just in back of the front bezel.
Press and hold both tabs at the same time, then slide the case forward. Continue sliding the case forward until it pulls free of the computer base. Sit the cover aside while you work inside the computer.
Never open the Evo case without first powering down the computer.