The series of beeps is a code that tells you what the problem is. There should be a repeating pattern of long or short beeps & pauses. More than likely the problem is with the video card or the RAM. Did you move the case or change anything recently? It's possible that the card or the RAM came loose in it's slot. Check this list to see if you can match up the beep pattern:
The information on Computing.Net is the opinions of its users. Such
opinions may not be accurate and they are to be used at your own risk.
Computing.Net cannot verify the validity of the statements made on this
site. Computing.Net and Purch hereby disclaim all responsibility
and liability for the content of Computing.Net and its accuracy.