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DUal Monitor Help...2nd Monitor Detected But Not Displaying

by pure_player52 / February 9, 2010 2:35 PM PST

i have 2 monitors a 22inch wide screen and a 19inch lcd i had both of them working perfectly fine before today when i disconnected my 22inch to fix a few cables behind my desk and when i connected it back up my 2nd monitor (19inch) wont display anything all i have is a black picture. the computer is detecting the monitor and the monitor is on but im not getting any picture on it

i have already tried
updating drivers
restarting pc (5000000 times)
adjusting the settings

i just dont know what to do now

Additional Details

i do have the CCC but it detects my monitors and tells me there functioning right but still no picture in my 2nd display

and yeah i just tried adjusting the cables but still no luck

i have a ATI radeon hd 4350 connected with 1 VGA Cable (19inch) and DVI (22inch)

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Can you test it on another computer?
by MarkFlax Forum moderator / February 10, 2010 4:32 AM PST

It looks like the 19" monitor may have failed. Can you test it on its own on another system?

Before you do, delete it from this system, close down the computer, turn off the monitor and unplug it from the mains, before connecting it to the other computer.

If it works there, try re-connecting again to the first computer and set up a dual monitor again.

Any LED's on this monitor, and if so, do they light up? If not check the fuse in the plug.


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i will try
by pure_player52 / February 10, 2010 4:58 AM PST

the LED on monitor is blue which means its being used

i will try another pc as soon as my roommate gets in town

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by pure_player52 / February 12, 2010 9:50 AM PST

i have tested my 19inch on 2 different computers and it works perfectibility fine. i still dont know whats making it not show anything

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Next steps.
by MarkFlax Forum moderator / February 12, 2010 8:03 PM PST
In reply to: reply

It may be that the video card is at fault.

Assuming that isn't the case at the moment, I had a similar problem with my dual monitor setup last year. However it may be different in that on my PC I only have DVI ports at the back, but I have one DVI monitor and one VGA monitor. I had to get a VGA to DVI adaptor to enable me to attach the VGA monitor to the PC. I got 3 adaptors, and was pleased I did because the first one failed after a few weeks.

Perhaps a similar problem with you?

If not, (ie, if your system has a DVI and a VGA port), try this;

Attach the VGA monitor again and turn on. Boot up into Windows, (are you using Windows? If so, which OS?), go to Display Properties and remove the 2nd monitor from there. Make sure the single display system works, then shut down the OS and the computer. Disconnect the VGA monitor.

Reboot and test the single monitor configuration. Make sure Display Properties only sees one monitor.

Shut down and turn off the computer. Reconnect the VGA monitor, turn it on, then reboot. Return to Display Properties and try and set up the 2nd monitor again.

If that fails then I am thinking there's a fault with the graphics card. If you are comfortable with 'digging inside', make sure the connectors to the VGA port are firmly attached.

You mentioned CCC in your first post. I don't know what that is.

Good luck.


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Same Problem; Fixed It
by dumpfood / June 23, 2012 12:25 AM PDT

I simply ran a factory reset on the monitor by navigating through the options integrated into the monitor controller. This of course was after 30 minutes of troubleshooting.

I noticed that the monitor would not display on two different computers both of which I know could work with dual monitor and the weird thing is that it would display menu settings so there had to be an interface issue. Updated drivers in Windows - no luck, then fiddled with the menu and saw factory reset. Boom! Immediate Fix.

Hope this helps.

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