You should be able to find the beep codes in the boards manual.
ya its not posting, p5b had bios updated. think it might be video card
if it's not posting, than it maight be some device not working or installed corectly..
It's time to get nit picky about language.
flash, your computer is POSTing - just not successfully. Silence would indicate that the POST did not run.
Manual for my Gigabyte mb says that 1 long, 2 short beeps in rapid sequence indicates a problem video card or monitor. "Rapid sequence" means that the interval between each beep is about the same length of time as one short beep.
You said "it beeps once then about 5 seconds later it beeps twice fast".
My manual says that two short beeps (by themselves) means "CMOS setting error".
You might try resetting the CMOS. Your manual will tell you how.