A mounting assembly for computer cover includes a chassis having a rearwall, a cover mounted to the chassis, a first connecting bar and second connecting bar movably mounted on the rearwall of the chassis and a driving member mounted on the chassis. The cover has two opposite sidewalls. A protrusion extends from each of the sidewalls. Each of the two connecting bars forms a stopping portion for engaging with the protrusion. A driving portion is provided on the driving member for urging the two connecting bars to move. The driving portion of the driving member drives the two connecting bars to urge the stopping portions to disengage from the protrusions when the driving member is driven.