I am currently using a fairly dated ASUS PC that has been serving me well but lately been freezing up for no apparent reason and can't display 4k content. I need a new PC but don't need a blazing fast computer as I don't game but do watch and edit 4K GoPro videos, stream music and surf the web. I'm afraid if I go buy something at Costco I will inadvertently buy something that will either be obsolete by the time I get it home or won't play 4K video, etc. Can someone give me some advice on what I need to be looking for in terms of video capabilities, high speed USB ports, etc?