Depending what BIOS you have this indicates a problem.

For example, if you have a Standard Original IBM BIOS the 1, 3 beep POST, (Power On, Self Test), indicates a problem with the Enhanced Graphics Adapter (EGA).

This site gives more details;
http://www.pchell.com/hardware/beepcodes.shtml

See if you can boot into Safe Mode. After the POST start hitting the F8 key gently once a second until you get to the Safe Mode list of options.

Mark