Hi Logan & Team, i've been having a problem lately with my computer, quite unordinary if you'd ask me.
My desk setup has a blacklight above it as it looks pretty awesome, but everytime I turn it on I get the Windows sound notification that a USB is being unplugged and plugged in. The blacklight isn't connected to anything my computer is, and i'm not sure as to which device is affected. Using Windows 8 if that helps
I'm going to throw my bet on the iPhone charger (assuming that your phone is connected when you restart) as I've had that happen to me before.
The best way to figure this stuff out is remove one, try to replicate and if it doesn't happen then you figured out the issue. If it keeps happening with everything removed then there's a different issue.
And you've disconnected the wireless headset receiver from the computer as well? I could see where the blacklight MAY have a click with that or a wireless NIC (if applicable) but other than that I'm not sure.
You're welcome, this is a very odd occurrence but without being there to play with it myself it's just one of those things that is hard to diagnose. My only other suggestion would be trying to disable USB ports one by one and see if there's just one causing the issue and keep it disabled.