So, yesterday, I acquired an old desktop computer from a friend. My plans are to install Ubuntu Server on it. He knew something was wrong with it, but he didn't know what. I was able to start it up right away, and it worked fine. I hooked up a second hard drive to it, and it still worked fine. Then, I removed and replaced the ram. When I turned the computer back on, it said "Error loading operating system." I checked all the connections, and everything appears to be fine. I went ahead and tried booting from the Ubuntu Server 11.10 cd. I get to the initial screen, select "install," and then it just goes to a blank, black screen. It doesn't even have the cursor. I then tried to install Ubuntu Desktop 11.10, but whether I try to install or boot from live cd, it just spits out a bunch of timeout errors, then gets stuck on a screen with the words "Ubuntu 11.10" and a processing bar. Both hard drives have windows 2000 OS installed. Help anyone?