I've tried google but I can't find them
There is no official standard for these codes due to the many brands of BIOS that are out there. To decode the meaning of your computer POST beep codes you need to know your computer's BIOS manufacturer (AMI, Phoenix, Award, etc). You should see this displayed on-screen while your computer during POST.
That being said, five short could be an AMI code meaning a processor failure/error. Are you overclocking?