What are you getting other than the beeps, is there anything on the monitor? Is there a pattern to the beeps? Different beep patterns can tell you what is wrong if you look up the BIOS codes for your BIOS. Have you tried a minimal boot, no drives with only keyboard, video, CPU, power, and one stick of memory? Please tell us more about what you have done so that we can have a better idea of what the problem might be.