I found out that my problem is being caused by moving my profile from my old dead "upgraded" to Windows 10 PC, to this newer Windows 8.1 PC. The old profile was working for awhile but doesn't work with pluging now, none are found and searching cant find any new ones or install them ( I have another thread on this, but people are just referring me to massive pages of stuff, which I cant figure out ).
But I switched to the installed profile for this PC and it shows plugins. But I don't know how to move my passwords, tabs and bookmarks to it, from the OLD PC profile.