Have you ran diagnostics on the system yet? That may help pinpoint a hardware problem such as a bad battery or possibly a hard drive problem. Restart the system and at the Dell splash screen start tapping F12. Run full system diagnostics and pay attention to battery health and hard drive results Are you seeing any blinking lights or hearing any beeps? When you open the system up make sure the RAM is securely seated in the DIMM slots. Try reseating the RAM and see if that helps..