Thanks for the interest Peter. Have already tried that to no avail. Any other ideas?

Hi all, I have just installed Windows 7 on a brand new computer and after downloading latest software from B&O site I find when I try and turn on my BeoLab 4000's in my link room they switch on for about 2 seconds then switch off! I am using a BeoLink PC2 and everything was working fine until I changed computers. Can anyone help? Fingers crossed