Check box not appearing in front of add in

[Praveshishere]

I am trying to use Excel Solver add in, but can't see it in Data tab, I went into

File -> Options ->Add-ins

I found the solver plugin but there is no checkbox in front of any add in, so that I can turn it on, what to do. It will be a great help, if you could solve my issue.

[#2]

Click the Go... button at the bottom of that screen.