How to connect router to modem to computer to hdtv

My sons set me up with my old pc an new pc sharing my hdtv as a monitor. Wires came loose wile I was trying to re-arrange and now only one pc is seen when I choose inputs. is there a good link that shows the wiring diagram for modem, router, pc, tv, dvr...?
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  1. No, you won't find a diagram like that, why not just ask the son who set it up to draw a connection diagram and send it to you?
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