Bugcode_usb_driver bsod

Hello, I'm having extreme difficulty with my desktop PC. Over the last few days I've been getting BUGCODE_USB_DRIVER BSOd crashes. The only new device to the machine is a Samson C03U Condenser Microphone, which doesn't appear to be the issue - the machine crashes even if it's unplugged. The crashes have been getting worse, to the point the machine is now crashing every five minutes. I'm having to write this post on my Surface RT.

I've just about managed to get a zip of the .dmp files via Windows 8 Log Collector. I would appreciate if someone could locate where the problem may lie, and how I can go about resolving the issue.

Much appreciated!

The only new device is your mic.

what other USB devices are connected?

Is your web cam USB or built in?

Your last crash at 10:44pm June 1 was caused by your ATI graphics adapter..