Dell Alienware 17 R1. What happens: when the laptop works and is connected to the charger, and the battery reaches 100%, after a while it stops and if I restart it immediately it restarts and everything is normal. If I don't restart it immediately and leave it for a longer time, it doesn't restart. When the laptop is turned off and is put on charge after the battery reaches 100%, after a while the power ON LED goes out and then it doesn't start again. To restart it, I have to remove the main battery, then the Bios battery, then I have to short-circuit the + and - of the bios battery, then I reconnect the Bios battery and the main battery. When restarting, it gives me 5 beeps, I stop and restart. After that, I enter Bios, set the time, date and F10 and it restarts normally. Is the northbridge to blame? I think it's a problem related to power management. What do you advise me?