black screen and 4 beeps

Kissah Davis, 4 beeps on your Dell are for a Memory read / write failure. This could be caused by a bad memory module. First you should try to reseat it. To do that you fully open the securing clips, align the notch on the bottom of the module with the crossbar in the connector, place several fingers on top of the module and firmly push the module down into the slot, until the module snaps into position. If the module is inserted correctly, the securing clips will snap into the cutouts at each end of the module.