This update left my pc with so many issues. The keyboard isn't working properly, the ctrl, t,y ,print , higher brightness and mute buttons. After it was done there wasn't any sound coming from my pc got that fixed though. But the keyboard started giving me probe right after.
Well that's a real kick in the nutz. I don't know if you are just venting or wanting help. If the latter, need more info.(I'm assuming it's a Laptop? What is Make/Model?) -- Windows Version? Did you check for new drivers for your keyboard? IF you scroll up a little, mrdbeta left a great list: LOOKING FOR DRIVERS & SUPPORT--
Not that I will be able to help much without "web-searching" (which you should try to do.) I'm no pro by any means!!
If new drivers don't help, can you Uninstall that latest update? What update did you install??
I have been putting off updating again for a long time since rolling back to previous version since the last cumulative update did a 'hose job' on my machine. I've been thinking all day about trying to update again, but after reading this.... notsomuch!
Good Luck.