Hi Donna. Apologies for the delay.
Regarding the issue with opening a post... are you perhaps clicking the "Latest reply ..." text above the post title? That has a link directly to that latest reply and therefore would jump to the bottom.
Clicking the actual title should take you to the first post on the thread.
I now have exactly the same version of IE that you have, which is the latest version and I see the crashing issue when editing a post. Unfortunately I suspect this is a new problem in IE itself since it is not happening on any previous versions of IE, the new IE Edge browser, or the other browsers (Chrome, Safari or Firefox).
Do you have the option of installing Firefox or Chrome on your laptop?