First of all I want to say hi to everyone, its been a long time now since I have been here.
My situation is this, while playing WOW, it can be during an extensive period or not (just 30 min barely) that my system will shutdown. Well, to me it seems to be running, but the monitor shuts off and I cant do anything but reset the computer. I tried everything from software upgrades on my video card (my pc specs are on my profile btw ), to uninstalling and reinstalling WOW, to no avail, is there something else I can try, plz help, unfortunately when it blacks out it gives no error message of any sort... thanks

I would try another vid card driver. After that, another mobo driver.