Recently, with seemingly no trigger or start time, my computer has seemed to have enabled the cursor you see when you type in a text box. The little blinking line. See it? NO. ****. YOU DON'T. Exactly my point.
And it's screwing up with my page scrolling in web browsers. I have a tendency to use the directional keys to scroll through webpages, so now, for some reason, my screen is constantly pushed to the top or bottom because that stupid cursor (that should only appear when typing in a text box) keeps f*cking jumping to the bottom or top of the webpage or to some stupid line of text. BULLSH*T!
Help me remove it. I'd give you minerals if it were enabled.

I do stuff and thingies... Try widening and reducing the number of small nooks and crannies to correct the problem.
Does your mouse work normal on desktop or in other programs like notepad?
If not, maybe your mouse is broken... test it on another computer (e.g. friend's one).
Kinda sounds like a weird accessibility option. It auto-selects text boxes and scrolls to them basically?
None.
Tools->Options->Advanced->General->Always use the cursor keys to navigate within pages.
Uncheck that.
"Parliamentary inquiry, Mr. Chairman - do we have to call the Gentleman a gentleman if he's not one?"
Eh. I think that answer was almost win.
Uncheck "search for text when i start typing" instead. It sounds exactly like what would happen if that is checked.
I think actually checking that option would always make cursor keys scroll the page, which is what he wants, no?
Or just uncheck all accessibility options. All mine are.
None.