Okay, so I have an alienware m14x r2. It's a little aged but I have updated all the parts and it runs great. Until today. I was cleaning it and when I put it back together and turned it on without the bottom attatched the battery fell out. Now it wont turn on unless the AC adapter is plugged in. I initially thought i somehow killed the battery now. But when I do a diagnostics it says the batter is fine and at 83% and the cables are fine. Ive tried to power cycle it (Unplug battery and charger and hold down power button) then plugging in battery and still doesn't turn on. Can anyone help me with this and in hopes not to say "replace the battery."