A computer enclosure comprises a chassis with a first securing hole; a cover plate detachably attached to the chassis, a second securing hole defined in the cover plate and aligned with the first securing hole; and a securing member comprising a fastener and a coil spring; the fastener comprises a head, and a shaft extending from the head; the coil spring is attached to the shaft and between the head and the cover plate; and the shaft extends into the second securing hole, wherein the fastener is movable between released and locked positions; in the released position, the shaft is disengaged from the first securing hole, the coil spring is not compressed, and the cover plate is detachable from the chassis; in a locked position, the shaft is engaged into the first securing hole, the coil spring is compressed, and the cover plate is secured to the chassis.