My Computer Beeps Randomly

[googen]

My computer is beeping randomly. It does not do it at startup. Sometimes it beeps more often than other time, its a single beep at times every few minutes and sometimes it's a series of four beeps. I've checked my CPU's temperature and it says it is 54 degrees Celsius. Is this a normal temperature for it to run at. Any help would be greatly appreciated because I can't get much info on this problem.
Thanks

[Stylish]

If you have the manual, check what the beeps are suppose to indicate. Typically they fire off due to overheating or, umm, power issues?

[nanosani]

See if you have some key stuck in your keyboard ??

[MidiMagic]

Some upgrade programs and malware checkers beep when they detect things.