Been there, done all that. Everything works fine UNTIL I reboot again. Get error messages, DEA errors, etc...after reboot. Funny though, it doesn't always do that. But the second of third reboot it ALWAYS disappears. The wave driver is till shown in Device Manager, but no app's can open and show a error message saying Direct I/O something or another cannot be found. It all links back to that driver, and goes away when I uninstall the driver. I have even tried just not installing that driver and just using PT LE 5.3. Same thing, after a couple of reboots, I started getting DEA error when opening PT. When I uninstall PT LE, all the problems go away. Frustrating. I spend 2 days doing OS installs trying to get to the bottom of this. It just all links back to the digi001 card and PT LE. The computer is in spec with that "ultimate PC" recommendation in EQ mag a few months ago. Again, without PT installed in any way, the system is stable and the Delta 1010 and Nuendo and Sonar all work just fine and dandy. Possibly a bad digi001 card? Possibly a mobo that isn't detecting it in the PCI slot properly? I have tried moving the digi001 to another PCI slot but the same problem persists. I am no dummy on computers. I have built and optimized several DAWS and am generally pretty good at tracking down the inevitable problems that are associated with doing so. This one has me scratching my head though because of the intermittent nature of it, and how no updates seem to make a difference. The studio wants to have PT LE available, more for those customers that want "pro tools" more than anything. When it was running, I haven't heard PT LE do anything to audio that I cannot do just as well in Nuendo and/or Sonar, but you know how to stupid public can be. If Linkinsmackbeckgarbage used PT (usually just for editing...) then THEY need to use it, and by not having PT, the studio doesn't appear to be "capable" of producing good songs. Sigh...... Any other ideas? Ed