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Old 02-15-2012, 11:37 AM   #1
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Default Need help identifying problem

I have a 19 inch dell flatscreen monitor, Every couple of inches I have flashing columns of bars that measure approx 1/4 X 1 inch long. Depending on the background they are different colors. They all flash at the same time. I reinstalled the video driver but no change. Any ideas??? Thanks...
Jeff...
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Old 02-15-2012, 12:13 PM   #2
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Default Re: Need help identifying problem

I would try a different video cable as a test...
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Old 02-17-2012, 02:02 PM   #3
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Default Re: Need help identifying problem

Try a different cable as stated. If it's still a problem, borrow a monitor or get out an old one and see if it happens on that one. That will tell us right away if it's the monitor or the computer.
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Old 02-17-2012, 05:07 PM   #4
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Default Re: Need help identifying problem

When does the problem occur? If it only happens in Windows, it is possibly a software problem. Boot into Safe Mode and see if you have the problem. If not, then roll back to the previous video card driver. Sometimes a new driver doesn't play nice.
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Old 02-19-2012, 03:47 PM   #5
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Default Re: Need help identifying problem

Thanks to all who tried to help so far. Here is what I tried so far. I swapped out the cable - no change. Swapped out the monitor - still no change. To answer "when does it happen" - all the time. I guess that leaves the video card????? It is a Dell Demension E521. Household use only. I welcome all suggestions.
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Old 02-19-2012, 03:51 PM   #6
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Default Re: Need help identifying problem

I need you to be more specific. Does it happen when you first turn on the computer before Windows loads?
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Old 02-19-2012, 05:19 PM   #7
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Default Re: Need help identifying problem

Actually not until my wallpaper pops up. While booting it looks good. I also tried different drivers but no good..... Also when booted in safe-mode the image is fine with no problems. Re-install windows 7 ?????????
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Old 02-19-2012, 06:26 PM   #8
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Default Re: Need help identifying problem

That won't help. See if you can roll back the driver on the video card or install the driver from Dell's web site.
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