Monitor going black

Yes I did, I plugged it with the exact cable (new cable that I just bought, wich I was still experiencing the same issue after changing it, so its not a faulty cable, unless my monitor DVI-D single link has problem).

So new monitor was plugged in DVI-D Single link as my old monitor was. Then I plugged my old monitor with a HDMI --> DVI-D Dual link as a side monitor to see if I would have problem with this monitor while being on the new monitor.

As I said I couldn't recreate the problem. So I was thinking maybe my old monitor would be fine with a DVI-D Dual link, but like you said, I changed too many thing to trouble shoot it.

So Thursday (my gaming night) I will only plug the new monitor with the DVI-D Single link and see if the problem happen. If it doesnt, I guess we can say that my old monitor is the problem. If it does happen, then you'll tell me whats the next step I shoiuld do to see if its my graphic card.

I will let you know, Thanks alot for answering my question, it is very appreciated.

So Thursday (my gaming night) I will only plug the new monitor with the DVI-D Single link and see if the problem happen. If it doesnt, I guess we can say that my old monitor is the problem. If it does happen, then you'll tell me whats the next step I shoiuld do to see if its my graphic card.

Sounds good.

However, please use descriptions like DVI-D Port #1, Port #2, etc. .

It's confusing when you say things like DVI-D Dual Link ... that is something else.

So new monitor ...   ... old monitor was.

Make and model of monitors please.

I haven't tried different port for the cable, Ive been using a DVI-D Single link all the time. I didn't even realized that I have more then 1 DVI Port on my graphic card. What I was saying is that when I was running the test on the test monitor from work (wich was connected using the DVI-D Single link on the same port as when I am experiencing issue) I was running my Monitor (the one wich I have been having issue) on the HDMI to DVI-D Dual Link cable.

So from what you're saying is that I have more then one DVI port on my card (I didnt look at it that much yet) I will keep running the test on the same port that I have been having issue unless we decide that its worth trying another port once we know its not the monitor.

As for your other question.

Monitor at home is an ACER (I will have to check the model when back from work)

And the test monitor that was available for me to bring from work is LG Flatron L1953T-BF

old monitor btw is a ACER AL2216W

Ran a Stress test with Video Card Stability Test with the alienware team on the phone and remotely monitoring my pc, the GPU Core dropped to 300mhz and crashed, faulty video card.

Had a feeling this was coming so I did it with them and they are going to replace the card, I will post to let you know if its all fixed once its done and make sure they fixed it.

Thanks so much for your time!

Video Card changed (there was a problem with it, but the technicien said it was not well seated, still replaced it) Monitor still randomly go black.

At this point I guess it would be a monitor issue, will test run another monitor next time I get to play for a while to see if it solve it.

Other then that what else could be a problem?

Thanks!

old monitor btw is a ACER AL2216W   LG Flatron L1953T-BF

Both seem like standard DVI monitors. Already posted above how they should be used.

So much strange-ness and guessing going on here ... it really doesn't have to be this way.

Your games run mostly fine but the first time Dell runs a Stress-Test it crashes and they replace the card. Why?

The video card is good, but not seated well, and is replaced anyway. Why?

How a card can not be seated properly, but still run games is beyond my understanding.

You never truly narrowed it down between the monitor or the computer in the beginning. Why?

Actually, we know the answer to most of the above questions. 

First step, IS STILL (a week later) narrow it down to one machine or the other.

And really, now that different parts have been installed ... you have to start over anyway. Also, you should be following up with Phone Support at this point since they are handling your trouble-case now. Let them know you are still having problems.

But remember ... they can change out the whole computer, piece-by-piece ... but if it was the monitor, cable, software, or a driver all along ... it will still never work properly.

You are right, I did it all wrong. I dont know why the graphic card dropped to 300mhz and why they changed it because it wasnt seated properly, The video card is not the issue. The cable was changed, and is working fine. The drivers are up to date, I have the latest Catalyst installed.

My next step is to only change the monitor (and nothing else to make sure that it is the issue) next time I get to have a playing session and we will see from there, if I dont encounter any issue, its safe to say the monitor was the major problem all along.

I'm not going to call phone support until I narrow this down, computer or monitor.

Thanks for all your time.

I'll keep you updated on how that this will go, as you know how to trouble shoot and I'm sure you will be more helpful then Carlo or Sanchez on phone support

Just a little research I've done on my monitor ACER and windows 7, alot of people are experiencing trouble with Radeon graphic card, I already ordered a DVI to VGA adapter and will try plugging with a VGA cable and alot of people fixed the problem this way. Don't know what is the issue there but it will still be nice to be able to use it as a second monitor once i receive my dell Ultra Sharp (Good thing anyway, that monitor will give way better result for my gaming rig)

I'll let you know if the VGA Cable makes it work, testing it tonite, then we can say that the people on the phone, the site tech that came, didn't really trouble shoot well as my video card was always perfectly working.

Running the stability test myself, on the new graphic card I saw it drop to 300mhz when I had security pop up from windows and made the test crash. All along the problem was the monitor compatibility issue with windows 7. It is weird that the resolution was fine with DVI cable for a while and then it just stopped working, perhaps a windows update, or whatever.

Thanks for all your help! will give you answer once I figure it out since all along, you were telling me to make sure monitor wasn't the issue!

That are you using to test with?

Heaven Benchmark, Futuremark (free ones), and OCCT are all good.

Already runned Heaven Benchmark and I have no problem at all with my video card, Im just going to test the VGA cable on my old monitor tonite!

Running the stability test myself, on the new graphic card I saw it drop to 300mhz when I had security pop up from windows and made the test crash.

I'm talking about this ... exactly what software is this?

If you have only one monitor connected ... it's normal for the AMD card to down-clock itself when on Aero Windows Desktop. When you run a 3D-graphics game, it THEN goes full clock speed.