Mass Effect 1 Patch and other stuff Help!

I have had a horrible time trying to get this to run correclty. So this all started with I was live streaming my game on twitch, for some reason when I am in a fight and I hit the space bar to bring up the power screen I can only use the mouse for half a second but it stops because I can even click on any powers or anything and stays there, so I have to repeatedly hit the space bar and slowly move the mouse over to the power I want. Obviously in the middle of a fight this is kind of a pain in the **bleep**. The first thing I tried as changing the mouse sensitivity, it did nothing. One of my twitch viewers suggested that I use the patch to try and see if that would fix it. When I tried to install the patch, it said it couldn't find Mass Effect, so I got instructions from the same person on how to fix that. Though the instructions from EA forgot a vital step, which was really aggravating having to find a way to fix that.

Okay, I fixed that, ran the patch but now when I tried to open my game this pop up comes up with the EA logo and says "Re-renter and verify your registration code". I bought the game from Origin, so I checked my Origin Email. It wasn't in there, so I found these instructions, which are also wrong in that Electronic Arts is under HKEY_CURRENT_USER not what they say it is:
http://help.ea.com/en/article/finding-mass-effect-serial-key/

Anyways, so when I went under Electronic Arts, Mass Effect is not under there. Pleaese help me.