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Bad monitor port?

Last response: in Graphics & Displays
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February 19, 2013 11:56:33 PM

Hello community,
In the middle of a new build, Intel I3 chip, Biostar TZ77XE3 mainboard, Nvidia GTX 460 video card, AOC 22 inch monitor with VGA and DVI ports. I added 8 gig kingston ram to existing 8 gig kingston ram. Suddenly the monitor won't display proper resolution, only going to 1280 x 800 when it used to go 1680 x 1050. The only way I can get proper resolution is to use VGA out on the mainboard. I've RMA'd the mainboard twice, waiting on the third now. In the meantime, I've brought up an old machine, (an Emachine T6410) put an Nvidia 8800 card in, with the same AOC monitor. And AGAIN I can't get proper display resolution using DVI ports. I thought AHA my problem is the DVI cable. (single channel). I picked up a new one at Best Buy, but the problem persists. So I have different machine, different video card, different cable, SAME MONITOR.
I'm thinking my problem is the DVI port on the monitor is bad (?) The monitor is about 5 years old. Please help, thanks.
-Mark

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a c 200 U Graphics card
a b C Monitor
February 20, 2013 1:25:02 AM

make sure the bios is up to date on the new mb and the ram is the same speed and voltage and timing. the ipgpu is going to use some of the onboard ram for video.
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February 20, 2013 9:47:34 AM

popatim said:
Yup it sounds like something corrupted in the internal inf file that PnP uses to set the resolution and available resolutions. You do have the option of overriding the defaults: go to step 6 here
http://www.sevenforums.com/tutorials/255-screen-resolut...


When I plug into just the DVI out, I get black screen, can't even bring up the monitor menu, if I plug into both VGA to DVI with adaptor, AND DVI both, (dual outlet video card) I can tell the monitor to use digital instead of analog, but the image is only the desktop background, I can't get to any Windows menus.... telling the monitor to use analog brings the GUI back.
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February 20, 2013 9:48:23 AM

smorizio said:
make sure the bios is up to date on the new mb and the ram is the same speed and voltage and timing. the ipgpu is going to use some of the onboard ram for video.


BIOS was updated on new build, ram was the same.
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February 27, 2013 1:11:26 PM

Thank you all for the responses. In the end I replaced the monitor, which fixed the problem.
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!