Having problems with your Dell OptiPlex GX400 PC Desktop ?
How do I take the case off of a dell optplex GX400
On the bottom of the computer in the back is a Padlock Ring, it should slide toward the center of the pc. Once you've done that, push the button on the bottom front of the computer, you should see the bottom edge of the Side Cover come out. grab the bottom of the side panel and swing it up, like therew is a big hinge running down the center of the top of PC. Hope this helps, if it does please rate my solution.
Repair Help & Product Troubleshooting for Dell OptiPlex GX400 PC Desktop
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