Can that battery be replaced? It started happening all of sudden, after year of using it. Now I am having strange things happen, like I stress test it wih prime and furmark, and on first furmark test it started showing like On Battery, than after sec Plugged and doing that like few times. Like I am unpluggin power. Prime test went without problems. Than I tried RealBench Stress, and as soon it starts it shows same, On Battery / Plugged notes, for a few times. Also after using CPU Burn from Furmark, for more than 5 min, I got several glitches while doing test, machine freeze for a sec .... Not sure what is going on now. CPU Temp goes up to 94degrees, after more than 20 min of stress test.