Thanks! I'm wondering to replace the battery will I need to take any steps first like saving bios settings? I haven't done any custom changes on this machine. Or can I simply just shut down, unplug cables and replace the battery then simply turn on again? It's been about a day since I had to reboot several times until I no longer had the two beep error and I've shutdown and restarted a few times just to see what happens. So far it's come on every time, would this still mean it could be the battery?