I have an acer aspire 5000 running windows xp. The power cord went bad (for the third time) and completely drained the battery. I bought a new power cord but the battery would not charge nor would the computer boot up. So I bought a new battery. The computer booted, but before I could change the power settings the battery discharged. I am thinking it is a software problem and not a hardware problem. When I turn it on, both the ac power light and the battery light on the front of the computer flicker then nothing. Two questions: 1. How can I get the computer to just run on ac power? 2. How can I charge the new battery?