Notebook Video, Display and Touch

My laptop has become useable in the past few days. I have no idea what as triggered this. I haven't been on any risky sites, no crazy downloads, and I haven't removed anything. I've had this problem before where games would'nt play and I kept getting "blah blah has been block from acessing grahpics hardware" but that was solved by updating my drivers (for some reason they refuse to update automatically). Now it's come back with a few.... A LOT other problems. The random checkerbaord patter still pops up when typing next, the screen still tears (Imagine tossing a thin layer of black ink on your screen). The screen freezes up randomly. And when I start up the game I get this random message about my fan not working properly. I cant get a good imagine from it with  my phone. Everything is up to date. And whenever I try to upload a picture on here my laptop erases my typing so please reply wtih an email adrress. sorry for typos it gets worse the more I type