First, I hope I'm posting this to the right section?
 
I noticed a problem I was having with my desktop the other night that I was hoping someone here might have some insight into what may be going on with it. The card in question is an EVGA Geforce 760 (Superclocked) which is currently running a dual monitor setup (DVI: Dell 1701 LCD monitor; HDMI: Samsung S24B350 LED Monitor).
 
The other night, I had a game running on the LED monitor and was trying to watch a video on the LCD when the LCD suddenly went into a black screen and behaved as though it were trying to find a connection. I tried turning it off and turning it back on again after a few minutes and nothing came of that, so I tried going into the nVidia control panel as well as the Screen Resolution option under Windows and it detected the monitor and settings as though everything were fine--no issues detected. At the time, I then assumed something may have been going on with the monitor, itself. However, as the game was minimized at at idle in a manner of speaking, the LCD monitor resumed behaving normally. I have also checked the cables and everything appears as it should.
 
However, when I resumed the game (which, again, was running on the LED), the LCD appeared fine yet there was flickering on my LED as I was playing, which then led me to think that maybe it's the video card or possibly a driver issue?
 
Last night, when I turned that system on again and only had up a browser window with a very basic webpage (just text and a few jpegs on the site) on the LCD, I noticed the same issue (there was nothing even minimized nor running on the LED monitor at the time) where it went black again and as with the previous night, the monitor itself appeared to be behaving as though looking for a connection or that it had lost it. As with the previous night, both monitors were showing up normally under both nVidia's control panel as well as on the Screen Resolution under Windows (and Windows was detecting both monitors without issue).
 
I'm almost afraid at this point to turn that system back on again, but I rely on that computer (and literally can't afford to replace it nor any of my hardware). Unfortunately, the only thing still under warranty in that system at this point is probably the SSD drive, which I just installed a few weeks ago to replace a dying, old mechanical HD I originally had in there and was acting up. :/ Also, the inside of desktop was cleaned recently.


I was wondering if someone may have an idea as to what's going on with it that's causing this problem?
 
My hardware specs:
 
- Windows 7 Pro  (64 bit)
- Gigabyte GA-Z68A-D3H-B3
- Crucial 2GB (2 x 1GB) DDR3 1333
- Crucial Ballistix Tactical 8GB (2 x 4GB) DDR3 1866
- Intel i7-2600 (Sandy Bridge)
- Enermax ETS-T40-BK CPU Cooler
- Antec High Current Gamer Series HCG-750 (750W)
- EVGA Geforce GTX 760 (Superclocked)
- Asus DVD-Writer (DRW-24B3LT)
- Asus Blu-ray Writer
- Crucial MX500 1TB 3D NAND (SATA 2.5) SSD
- Western Digital (Blue) 1TB 7200RPM SATA 6.0 3.5" HD
- Western Digital (Black) 3TB 7200RPM SATA 6.0 3.5" HD
- NZXT H2 case
- Dell 1701 LCD monitor (DVI)
- Samsung S24B350 LED Monitor (HDMI)

likely culprits for that could be the monitor cables , the monitors themselves,  or the videocard/ & it's output ports.
 
*cheapest is to replace the monitor cables & test out for awhile .
Next would be to run only 1 monitor for a bit, see if it ever does it again . ..then the other 
etc..

i noticed you said your card is superclocked. I had that issue with mine and I had to either drop the clocks or raise the voltage to gpu.

That's some high-clocked RAM for that processor, did you ever verify it was fully stable?
 
OCCT has a GPU artifact scanner and a system memory error checker, but I'd recommend running Memtest86+ for a proper mem test. If it's slow you can just let it run overnight and check it for any detected errors in the morning. 

From what I remember, the faster speed RAM may be running at a slower speed by default (to "match" the slower speed RAM I have in there), but I could be wrong about what speed it's running (ie whether it's at the default or the slower speed). I received the faster RAM as a gift, but it's been in there for a few years now and I've never had any issues with it nor with any instability since it's been in there (at some point, I'd hoped to have replaced the slower pair with a pair to match the faster pair, but never had the money for it). I should also mention that gaming is actually a secondary function of my desktop nor historically had been even the most taxing thing I've run on there (although, these days, gaming has been the more taxing function but still remains secondary to what else I use that computer for).
 
I have run Memtest86 (I actually have it installed on my Linux bootloader as I've used it quite a bit in the past and with different systems I've had over the years) and even ran it at the time that the faster RAM was installed as well as recently and no issues have ever arisen on that front (I typically have let it run a number of times over a period of hours just to be sure).
 
I have checked out my device manager and no error messages there and everything appears to be normal. Also no issues with my boot screen nor BIOS. Regarding my drivers, the only update I've made was to the video card driver, but only after this problem arose in the off-chance that somehow my driver may have been the culprit (I did a "clean" install of it as a precaution). It also did not "cure" the issue as the problem continues.
 
Yes, I was trying to watch something on the other monitor while gaming when this first happened (in retrospect, I'll admit I probably shouldn't have). However, in the past, I had done so with another game (ie may have had a video such as a walkthrough up on one screen and a game on the other), but admittedly had never done so with the game I had running when this problem first appeared. Also, other than just after I installed the new driver (when I tried to run a video +the same game and ran into the exact same issue), I have not run any videos nor games at the same time as a precaution as again, I've no idea what's causing this problem. In the time since this first happened, however, I now have noticed the issues sometimes when I've had a just a web browser open in one screen (again, just straight HTML +jpegs) and a game running on the other screen or will have a video on the LCD yet the LED will be completely idle with absolutely nothing running on it (not even minimized). The only difference between the two screens when I've noticed issues is that the LCD will typically go black and acts as though it's looking to connect or lost the connection (despite Windows and the nVidia control panel claiming that everything is supposedly "normal" and is detecting that screen and settings correctly) while the LED at the time that happens is running normally. Yet, when the LED begins exhibiting issues, the LCD appears fine while I'll see white lines or flickering going on across my screen (again, everything appears to be "normal" according to Windows and the nVidia control panel). That's what makes me wonder if something may be going on with my card?
 
Thanks again for all the help and suggestions!
 

The only lighting in the room has LED bulbs and the light fixture is really far away from the tower. There are also no wireless devices of any kind and wifi is actually disabled, as the
construction of the walls can be described as being sort of like a Faraday cage.
 
However, I'm still working on trying to get access to some spare DVI and HDMI cables to try out to see if that may help.
 
Thanks again!

The screen actually blacked out when I had the browser open. When the flickering happened (which only happened to the LED/HDMI--the blackouts were on the LCD/DVI), the screen it happened to either had nothing up on it or had a game up (but nothing on the other screen). Regardless, the browser was Firefox.

That sounds more like corruption from an intermittent contact on one of the GPU solder bumps underneath the GPU core package, but it's hard to say without a photo. Here's some examples of specific types of hardware errors: http://www.playtool.com/p...tifacts/artifacts.html