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Hello,

First off, my computer recently had its motherboard/video card replaced. It is a dell xps l501x. The issues with the colored lines began before the mother board was replaced. Thus, I do not believe a faulty motherboard is the problem.

These lines are thin and occur on the top centimeter of the screen. They are made up of many colors and sort of look like squiggles going horizontally across the page.

Also my computer will not sleep properly. When the computer is put to sleep the screen will go black, but the fan will continue to run and led backlit keyboard will remain on. They begin immediately after the dell logo comes on. I also get 5 bluegreen dots appear in the top left hand corner of the screen.

The lines do not always appear, its is sort of hit or miss with my computer.

I have performed a system restore and and wiped the hard drive. This did not remedy either of the situations.

I am not sure how to proceed as it cannot be the motherboard or hard drive.

Any help would be greatly appreciated, thanks!
 

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Your screen connector cable might be loose on the end that is connected to the screen. Try moving the laptop while it is running or move the screen to see if it worsens or gets better to confirm.

Also update all System Drivers mainly graphics drivers by going to Dell.com Support>Drivers look for the model number Version of Windows including 64bit or 32 bit download the drivers and install.


If Windows does not boot try booting in "Safe Mode" by tapping the F8 button as soon as you press the power button. Select "Safe Mode" in the options screen.
 

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I've tried re-installing the drivers to no avail, and moving the laptop does not help.

Sometimes when i start up and see the lines the computer will shut itself off immediately. The only way I can successfully boot the pc is if I run the computer repair at start up. That will allow the computer to boot, but it will not get rid of the lines.

FYI the lines only appear when the computer is starting. Once the logon screen appears the lines are no longer present.
 

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Go to the Dell.com Support>Drivers look for the model of your machine see if there is updated drivers for your graphics. The motherboard that was replace is it the same model and revision as the last one? Use Speccy to find out which motherboard you have go to the manufacture of that motherboard to see if there is graphics drivers also.
 
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