Touchpad wont work after typing?

So uhm, I have a problem with my windows 7 computer, I installed the latest update (which I regret) and now after I type on my computer, my touchpad cursor wont work and only works if I right click (I think) and then move my cursor, its so annoying because I can't play Minecraft without my touchpad not working. What can I do to fix this? :(

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