Windows 7 Prem Freezes when monitor powers back on

I don't know what this could be, I set my system to power off the monitor instead of using a screen saver. When ever I try to power it back on the screen will come on with the desktop as I left it, but the computer freezes.

So I reboot and during the reboot it checks my C drive for consistency, never finds a problem. Other than that the system works fine, and it doesn't happen every time, more like once or twice a week. It happened twice today which got me fed up enough to ask the community. I have no clue what it could be, I thought it might be the C drive going out, but it's a new SSD, actually it's a replacement as the first one I bought died after about a month and OCZ sent me a new one.

Asus P6T Deluxe V2
i7 920
12gb OCZ High Perf RAM
120gb OCZ Vertex SSD
1Tb WD HDD
Lian LI 750W
nVidia Quadro 3800
Win7 Home Premium