I have installed the Mbox2 beta driver for WIN7 (8.04b). And everything works fine now. Happy. ! Windows 1064bit & the digidesign 804B driver like each other and they like the new Sonar Platinum. Great!

I had the same using an mbox Behaviour can also be stopped by switching from asio to mme. I only use the Mbox with a laptop very rarely. In the studio I use Tascam.

Yes I did notice that. But the ASIO driver is quite stabil. So as a last resort I thought I'd go one driver back. And low and behold... It worked. I am very pleased with this. As I now allso have not suffered from any blue screen. Wich did appear every week or so.... 8.04 seemed to solve all those issues.