For some reason, it seems my headphones will not work right in Windows 7. When I plug them in, the built-in speakers (I have a laptop) get silenced, but no sound comes out of the headphones. Windows doesn't show their muted or anything, and it seems to treat them and the built-in speakers as one device. I can get them to work if I put the computer in standby, then wake it up again. They're normal non-USB headphones, so I don't see how it could be a compatibility thing. They also work fine with my phone and under Ubuntu, which I have installed on the same machine. They'll also work fine if I plug them in while running Ubuntu, then reboot into Windows 7. What could be causing this, and I how could I permanently fix it?
Update: I found an option in Control Panel called 'IDT Audio Control Panel', although I couldn't find anything that might explain this.