Go Start - type disk cleanup - right click on Disk Cleanup and select Run as administrator and you may find it listed in there.
However, if you still want to upgrade free to Win 10, you may be able to via
https://www.microsoft.com/en-us/accessibility/windows10upgradeI don't know what Assistive Technologies are, but apparently MS don't check.
MS don't seem to have put a cut off date on this, but I wouldn't hang around if you would still like to upgrade free.
As for not having any control over the updates, the Anniversary Update has been out since 2nd Aug. but quite a lot still haven't got it yet through Windows Update, although some have used the MCT to download an ISO for it and upgraded that way.
Apparently though, millions have found that the upgrade has knacked web cams which MS are still working on a fix for - meanwhile the next update has already been released to the Insider Fast Ring, who MS have debugging any updates before they are released upon the unsuspecting public.
I'm currently using v10586 which was the release when I upgraded but if you avail yourself of that upgrade now button you will undoubtable get the Anniversary Upgrade version which is v14393.
I've had standard security updates which haven't caused me any problems so far.
Up to you.....