To disable an autoloader, right-click it and select Disable.
And take a look at the other options on that context menu. Open file location shows you where the program is located on your hard drive--a good clue about who put it there. And if you really can't figure it out, select Search online to see what the Internet says about this program.
Unfortunately, this Startup tool lacks Date Disabled information. If you're going to experiment with disabling various autoloaders, make a note about which ones you just disabled. That way, if something fails, you can fix it.
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