Can you elaborate on "Too Sensitive" please or do you mean the machine is a laptop and the touch pad is sensitive?

I mean that I do not have to actually strike the key using
my mouse
on a particular item.....just passing over it will bring up an
item I didn't want. Hope that makes sense.

This sounds like what is termed a mouse over which means that a snippet of the given aspect is revealed but you would have to click on the main link to see the whole aspect.

If you were to hover the mouse cursor in another location that information shown by the mouse over should disappear.

Possibly you can find the answer at the link below. I imagine it is just a mouse setting in the Control Panel.

Here is a link that might be useful: auto-open cursor hover feature

An alternative link for your consideration.

Here is a link that might be useful: How to stop mouseovers opening.