Files on passport not showing on TV's

I have bought 2 WD passport external harddrives. I copied files from my old WD hard drive and from my computer hard drive onto both new hard drives  and these show up and play on my computer but when i have put it into my 3 TVs the files don’t show up. The old hard drive has always worked fine on all TVs.

What have i done wrong?

Have copied files to other hard drives and have never had this problem.

More info

my old hard drive is a WD elements