Best was to watch computer video on the TV?

Marc

New member
I just bought a new TV and a new computer (Dell 9000). TV has a PC in. They are in the same room but 20 feet apart. I want to watch video files on the TV (from the computer). If I run a cable through the attic I need like, 100 feet. Cable/video seems to be very expensive at that length (and impossible to find). If I understand, wireless is not an option. What to do? OR, where can I find computer video cable at that length?
 
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