Question about Dell M781S Monitor

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Brown horizontal lines sporadically appearing on monitor

I have brown horizontal lines which appear on my monitor sporadically. This problem is getting progressively worse. I have tried moving the phone and all other electrical appliances which are near the monitor, but nothing seems to reduce the problem. I have brown horizontal lines on my monitor all the time and sometimes it takes over my whole screen and I can't see anything.

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I had the same problem. I fixed it completely today. The horizontal lines disappeared. IT IS DEFINETLY THE DEVICE DRIVER. I confirmed my monitor model tyope (dell M783s) and downloaded the specific driver for this monitor.

I had to do these exact steps or did not work.
1) with the problem screen, disabled the display adapter under the Hardware/Device Manager settings.
2) Restart the PC
3) Boot will come up with brown lines still but the screen will low resolution of 600x800.
4) Then I installed the correct device display monitor driver onto the pc. ( you may need to scan for new hardware, then choose the directory with the new hard drive.)

If you need step by step... just reply back.

Posted on Dec 21, 2007

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Posted on Jan 02, 2017

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1 Answer

Brown horizontal lines which appear on my monitor


Hi there and welcome to Fixya.

This type of issue is geared towards hardware problem you only need to verify it by doing the following:
  • Make sure the computer is turned off
  • Turn on the PC and immediately tap on "DEL" key repeatedly (on some systems, it's "F2")
  • The BIOS screen will appear (not the windows logo), here, you can stop tapping on the kybd.
  • Spend 30min or an hour with the BIOS screen and check if the lines are still present
If the problem persist, then it's definitely a hardware concern and the monitor needs to be serviced. Please understand that there's no DIY solution for this unless you are a certified/trained monitor techninician.

I hope this helps, Thanks for using Fixya.

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