I have a dell inspiron n5050 that is at 0% charge but with the AC adapter it turns on. I'm bios it said there is no adapter it won't charge but will work fine when it's plugged in. It's a replacement adapter but looks like the original. I don't know if it's my battery or adapter. I plugged it into an HP charger and it still turned on but no charge. Any ideas? I don't want to buy a battery if it's the adapter and I don't want to buy an adapter if it's the battery.