D-SUB Power Saving Mode in certain Games

[cryoK]

I don't know if there is a way to fix this because the D-Sub Power Saving Mode Message only shows when I am playing a video game.
When I Google I see most people with a problem about it while starting up, however that is not the case with me.

Everything works, such as going on the internet and surfing, but whenever I am in a video game like Oblivion, within thirty minutes this message will pop-up and black screen.
It only happens with certain games though; I can run Starcraft 2 for 3 hours and there is no problem.

I have VGA w/ DVI adapter and put into D-SUB on my LG FLATRON E2250, there is nothing wrong with my cable and I've tried putting another cable to no avail.
I also did a clean install and this still happens, so I'm pretty sure it has to do with my Monitor or 8800GT.
On some days, I can play Oblivion for an hour and a half so I don't see the correlation with anything...If anyone knows what to do I'll try it out..

 

[VirtualLarry]

Check temps or power supply, generally one of those two.
Try Furmark.

 

[cryoK]

Damn, I tried Furmark and my GPU max temperature jumped to 106C at the end of the 1 minute 1280x720 benchmark.....should I be worried?

 

[VirtualLarry]

Yes, that is concerning.

 

[wsaenotsock]

If you GPU crashes, that "Power saving mode" is just the automatic mode your HDTV is going to when it isn't receiving a signal from your computer. Check that all your fans work, clean the inside of your case and clean the fan blades, grilles with compressed air, and scrub off the fan filters if you have them.

If it still occurs you have the option of trying to re-apply the thermal compound on your GPU or underclocking it.

Also, Read this:

Some chips of the GeForce 8 series (concretely those from the G84 and G86 series) may suffer from an overheating problem. NVIDIA states this issue should not affect many chips,[37] whereas others assert that all of the chips in these series are potentially affected.[37] NVIDIA CEO Jen-Hsun Huang and CFO Marvin Burkett were involved in a lawsuit filed on September 9, 2008 alleging that their knowledge of the flaw, and their intent to hide it, resulted in NVIDIA losing 31% on the stock markets.[38]
The reason for the high failure rate was because of improper selection of the underfill material for the chip. Underfill materials are a type of glue that keeps the silicon die firmly attached to the packaging material, which is where the connection to the actual pins takes place. On the affected chips, the working temperature of the underfill material was too low for the task and allowed the chip to move slightly if temperature was raised above a certain level, weakening the solder joints by which the die is attached. This eventually leads to a catastrophic failure, although the way the chip fails is quite random.

Source: http://en.wikipedia.org/wiki/GeForce_8_Series#Problems

I had a 8800GTS that failed after getting too hot, so you really don't want to let this card sit at high temps for a longer period of time.