I just finished building my first computer and it doesn't seem to be working.  I powered it on, and it initially worked.  I was able to get to the set-up of the BIOS, and I messed with some of the settings.  I honestly don't remember what I did except for a few things:  set the system clock and make the CD-ROM the 1st boot drive so that I could install Windows.  It started going through the Windows installation and started to format the hard drive, but it just froze at 51%.  My friend restarted the computer, and we tried to go back into the BIOS, but it froze at the opening logo for my mobo.  Now, when I turn on the computer, the fans run and the lights turn on, but nothing shows up on the screen.  There is a periodic 1-second long beep every 2 or 3 seconds, but nothing else happens.  I tried reseting the mobo (removing the battery and moving one of the jumpers for about 10 seconds), but that didn't help.  Can anybody help me on this?
Relevant Info:
Mobo: ASUS A8N-SLI Premium
CPU: Athlon 64 3800+
Memory: 2GB OCZ High Performance

Is there any other information that would be of use?
Thanks

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