AMIBIOS 2 x kurz short peep

Hello,

yesterday I bought a new fujitsu-siemens notebook with amibios v02.54.
I configured an administration password. At startup there are two
short beeps shortly before I can see the input field for the password.
After entering the password there is one more short beep. Then Windows
XP starts correctly.

Do the two beeps show the amibios-error "Parity error"? Or what does
this mean? I don't think there is an error. Can I stop this beeping?
The Bios is very poor and doesn't allow me to configure anything like
this.

Thank
Gabriel