Monitor's shutting off

Hello everyone,

I have searched the forums, as well as all over the net for a solution but to no avail. I have seen similar issues but none of the suggestions seam to work for me.

It seam's when I play multiplayer games (hasn't happened to me on single player yet) My monitor's go black, then show the "no signal" message, then the light turns orange. My computer itself remains functioning but I must restart it to get the monitors to come back on. It happens usually within 5 minutes of the multiplayer game activating. The only game this doesn't seam to happen with in multiplayer is cod 4 for some reason.

I have all power settings set to never turn off.
I have checked my cables and the placement of my vid cards.
All of my drivers are up to date.
My heat appears to be low / normal range.


I run dual 9600 GT nvidia's SLI capable (dont always use it)
3 1/2 gigs of memory
Two Acer P191w 19 in widescreen monitors.

Any help would be greatly appreciated.

Thank you

650 watt PSU along with a Visiontek 400w dedicated ( http://www.visiontek.com/products/ [...] upply.html )