Hello here is the homepage:

http://www.pcchips.com.tw/PCCWebSite/Products/ProductsDetail.aspx?CategoryID=1&DetailID=271&DetailName=Feature&MenuID=1&LanID=0

Here is a list of beep codes:

http://www.computerhope.com/beep.htm

3 long beebs, means you have a keyboard error.

The power supply, could also be failing.

Look for any drivers missing, in the device manager.

Good luck