MCintosh MA7900 USB Driver causing Windows10/11 Crash

@jmiqui - I created an account just to respond to this thread. You are not alone, I too (am one of the "crazies") that hook up a McIntosh to their PC. This exact same issue happens for me using my MHA100 connected to my Windows 11 PC. same issue existed when I had windows 10. It happens randomly and is most definitely driver related. My PC will ALWAYS crash at some random point once the mcintosh is turned on. if the mcintosh is off and connected via usb, i get random "USB unrecognized errors" that pop up once in a while. 

I found this thread just googling DPC_WATCHDOG_VIOLATION. I also have a Mcintosh c2600 that i had connected to the same PC via usb and never had any issues. It's specifically only when my MHA100 is connected. It drives me insane each time it crashes. 

I spoke to a guy named Chuck at McIntosh and they are aware of the issue. No fixes. Not sure if they will update the driver ever, unfortunately. Good luck. 

@jmiqui - Interesting info, thanks for sharing about USB over SPDIF. As of last night I tried uninstalling the drivers for it and having it re-recognize itself but instead use the ’windows’ drivers over the mcintosh.

To my surprise, the PC did NOT BSOD with the watchdog error at all. I’ll continue testing today and we’ll see if any changes come about.

Interesting point about upgrading your PC, I also upgraded recently, MB, CPU, GPU, all while keeping the same SSD. I still get the error.

It is what it is, ive considering getting a bluesound node if it ever drives me to the point. The only missing key feature is that if I get a streamer, it only takes care of my music and i lose the ability to hear any PC noise, browser, youtube, movies, etc.

It is what it is.