qnx install disk beeps at photon startup


i’ve downloaded a qnx demo iso
but everytime (independent if run from cd or install, even the 1.44 mb demo disk) my pc starts beeping i cant stop it
please help me :frowning: :frowning: :frowning:
i tried it on another machine (not mine) and there it works
i have a ati radeon 9550 graphics card

plz help me !