AFAIK, no they are not standard. You need to know your beep codes. If you don't have a manual handy, then just start looking around. I would suggest you giive this new fangled
Interweb-thingy a try. Take whatever info you can find on your motherboard (manufacturer name, board name, model number, revision number, serial number,
anything you can find) and one by one, plug the info into that Interweb search motor and see what comes up.