My screen will sometimes go black for a few seconds and the sound stops, but when the picture come back the sound doesn't. This only happens if I'm using my monitor, connected by as my default sound device but when I use my headset that is connected by optical wire there is still sound, when switched back to my monitor there is still no sound. The problem also makes it so that I can't make my hidden taskbar rise when I mouse over it when I'm on the Chrome window, although I can still get to the taskbar by pressing the Windows button on my keyboard. Restarting is a temporary fix, although whenever it turns off it gives me a notification about "Waiting for explorer.exe to close" (picture of message) then I have to click a button to force close that program. My computer closes it automatically when my headset is set as my default sound device.
This problem has only ever occurred when I play League of Legends, but for the most part I'm playing League when on my computer.
OS-Windows 7 Home Premium 64bit
GPU-Nvdia GTX 760
CPU-Intel i5 4690k
Motherboard-Gigabyte Gaming 3
Power Supply-600W Bronze