My computer is beeping and then nothing...

Quoting BIOS Beep Codes

“When you power on a computer the BIOS immediately takes control of the computer and performs the P.O.S.T (Power On Self Test). At the end of the POST the computer will play an audible ‘BEEP’ through either the PC’s internal speaker of through speakers attached to the sound card (if you have a built-in sound chip). If the POST completed successfully without detecting any problems with then system will play a single short beep to let you know the test is complete and the computer will continue to startup and load the operating system.

If during the POST the BIOS detects a problem it will normally display a visual error message on the monitor explaining what the problem is. However, if a problem is detected before the BIOS initializes the video card, or a video card is not present or not detected then the BIOS will play several ‘BEEPS’ through the speaker to let you know there is a problem. Depending on the type of the BIOS you have the BIOS may play beeps in a specific pattern to indicate what the problem is, or play the same beep a number of times indicating the problem. It is very important that you pay close attention to the number and/or pattern of the beeps your computer plays on startup.”

On the same page you can a table with the most common beep codes.

bad ram, try changing the memory

agreed, sounds like a RAM problem to me. depending on how much you have in the system, it may just be a problem with one of the sticks, so you can try removing one at a time. If you just have the one stick, then replace that stick. if you do that and still have the beeps..check all of your connections internally. if you know anything about how stuff is connected, then you can unplug devices to rule out problems. otherwise, stick with changing out the memory and find someone who can help you troubleshoot the problem more thoroughly.

Ended up being a Bad power suppy. thanks for the help