No Sound

I bought a sound card and a new headset, about 2 months ago. But almost everytime I turn on my computer there is no sound, and down in the volume control, it doesnt seem to be any sound... The bar that jumps up and down on the different programs. Then I restart my computer and everything is back to normal.

My sound card is a Xonar DX, my headset is a Razer Tiamat 7.1 and my motherboard is a Asus M5A99FX Pro r2.0, I dont know if that has anything to do with it, I just added it in case it does

It seemed like a timed event, maybe if I leave my computer off for more then 1 hour some driver fail to start next startup.