The cables are winning in the office

Trying to get my office ready for my desktop computer to come back home from HP I have come to realize that the room is overrun with a massive spiderweb matrix of HDMI cables that run hither and yon - some with no apparent reason for why they are even in the room because the things they had been hooked up to were removed. I think I need to strip all the cables and wiring out of there and restart that room from scratch. Get everything organized and get the cables under control, then layer the rest of everything over the new wiring scheme.