Dual Monitor...Help

Ok guys/gals,

Here is my issue.... I have 2 screens(Acer H243H.24") (set to ext.desktop). My gpu is evga 570sc. see specs if you need more info.

They were and still do work fine with 1 on DVI(monitor2) and 1 on HDMI(monitor1). Now I like the way the DVI looks better so today I hooked the other(monitor 1) to DVI also and now in Windows I get "No Signal"

Here is the fun part....The way I have them set on my desk is.. (monitor2)Main display and (monitor1) extended display(to my right). Therefore when I first power on I P.O.S.T...ect and see Bios on(monitor1) after boot and Windows start up it switches to (monitor2) for main display.

So I know both Monitors work,both cables are good, and both gpu port work(imo).

Now you know the setup and what I'm trying....Issue is after boot/start up into windows (monitor1) goes black "NO SIGNAL"

I'm pretty sure I have settings right. I do have all latest Drives for Gpu and Monitors.
Both monitors show up in Device Manger and Display properties for windows and Nvidia control panels.

Please Help If You Can!

Can you post a screenshot of your controlpanel > display > screen resolution page?

jeepmann4x4 said:

Ok guys/gals,

Here is my issue.... I have 2 screens(Acer H243H.24") (set to ext.desktop). My gpu is evga 570sc. see specs if you need more info.

They were and still do work fine with 1 on DVI(monitor2) and 1 on HDMI(monitor1). Now I like the way the DVI looks better so today I hooked the other(monitor 1) to DVI also and now in Windows I get "No Signal"

Here is the fun part....The way I have them set on my desk is.. (monitor2)Main display and (monitor1) extended display(to my right). Therefore when I first power on I P.O.S.T...ect and see Bios on(monitor1) after boot and Windows start up it switches to (monitor2) for main display.

So I know both Monitors work,both cables are good, and both gpu port work(imo).

Now you know the setup and what I'm trying....Issue is after boot/start up into windows (monitor1) goes black "NO SIGNAL"

I'm pretty sure I have settings right. I do have all latest Drives for Gpu and Monitors.
Both monitors show up in Device Manger and Display properties for windows and Nvidia control panels.

Please Help If You Can!

Since the only difference between hdmi and dvi is that hdmi also carries audio, if you're seeing things "better", then something isn't right... most likely the montior's set up info. I'm not familiar with your monitor, but there must be someway/setting to distinguish between dvi and hdmi?

jeepmann4x4 said:

...Is it possible that just trying to switch the wires in the first place could kill something in the gpu to make it not work with dual-monitors???

No, just swapping ports won't kill anything. It's my thinking that perhaps that attempt at 5.5GHz may have messed up something? One of the dangers of an unstable OC is that it can and does corrupt the OS. Don't get me wrong, I was cheering you on just as loudly as the next man, but... well... OS'es get corrupted doing stuff like that. I know you only booted up at 5.5, but that can be all it takes.

Hopefully the card is alright and at worst, the only thing you may have to do is re-install. Even better would be if I'm way off base and there's some setting we're overlooking.

Have you tried Driver Sweeper in safe mode? Going back to square 1 sometimes does the trick.

Fumz said:

jeepmann4x4 said:

...Is it possible that just trying to switch the wires in the first place could kill something in the gpu to make it not work with dual-monitors???

No, just swapping ports won't kill anything. It's my thinking that perhaps that attempt at 5.5GHz may have messed up something? One of the dangers of an unstable OC is that it can and does corrupt the OS. Don't get me wrong, I was cheering you on just as loudly as the next man, but... well... OS'es get corrupted doing stuff like that. I know you only booted up at 5.5, but that can be all it takes.

Hopefully the card is alright and at worst, the only thing you may have to do is re-install. Even better would be if I'm way off base and there's some setting we're overlooking.

Have you tried Driver Sweeper in safe mode? Going back to square 1 sometimes does the trick.

I know that with OC'ing can mess things up but what I'm kind of stuck on is that after my 5.5ghz try, I used this computer for hours with no issues,powered down,powered up the next day ran for hours again with no issues. Only when I remembered that I had been meaning to try out the DVI/DVI instead of HDMI/DVI is when I got an issue. I switched the cable and right off the bat started this issue.

Yes ran DriverSweeper in safe mode. I'm not to worried if the card is bad, I can just RMA it. I have Lifetime Warranty on it. I just don't like the 7-10 day down time(min) and just want to pinpoint the issue as close is it can be before I go down whatever road it takes me.

As I was typing this I did remember that the reason I went with the HDMI/DVI setup instead of DVI/DVI in the first place is that when I tried it the first time I could not get it to work then ether.

Was a nice OC though right!!..