I just got a computer tonight. It was one that my friend gave me. It was running before she removed a hard drive, and she said that there are two hard drives in it now. I'm completely lost. I need complete help. I made sure that everything that was inside the computer was connected and when I cut the computer on it made a loud continuous beep. I don't know what to do, or where to even begin. I'm pretty much a newbie about this and have no clue what I'm doing right now. Someone wanna help out?