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PC causes horizontal line on LCD TV

cly

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I am hooking up my PC to my 47" LCD TV with a DVI to HDMI cable. While watching normal digital calbe I can see these fainst horizontal line scrolling vertically on my screen. If I unplug the HDMI PC cable the lines go away. Would a better cable fix this or is there another solution or reason for these? Thanks
 
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A different cable would be a good place to start since it's the cheapest fix. Give it a go! :toast:
 
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You may have a broken wire in the cable you have
 

cly

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When I am using the PC on the TV it is fine but the DVI/HDMI cord seems to cause interference when I am watching cable on the TV.
 
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Athlon2K15

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v12dock

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Go to your local cable provider and tell them the HDMI cable they supplied you with isn't working right. I did this and got a high quality cable for free!
 

cly

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Ahhh! My cable box is hooked up to my TV using Component Video. My PC is hooked up to my TV using a DVI to HDMI cable. While watching cable TV i get the faint horizontal 'floating" lines that seemed to be caused by my PC being hooked up to my TV. If I unhook my PC they go away. Is this a problem with the HDMI/DVI cable, PC, perhaps I shouldn't use component video from the cable box?
 

emericanmade1

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I had this same problem when I first started using an hdmi cord. I got a new cord but the problem persisted. The problem is probably not with the hdmi cord but with the graphics settings. Here is the solution. If your using windows 8 (and it is probably similar with windows 7), right click on the desktop. Go to "graphic options" then "output to" then "clone display". Finally, select "digital television + built in display" By making this change the horizontal line went away.
 
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