Thanks for replying
Yes, I did uninstall the current drivers before installing the new ones. Then new ones that I downloaded came from a HP assistant, and I also tried installing the ones on the HP website. I've also posted this on the HP forums, but no reply
One thing I just discovered, though, was that it happens most of the time when I am carrying my laptop in sleep mode. For instance, I will be downstairs, finish what I am doing down there, put it in sleep mode, carry it upstairs, turn it on, and then it happens again. Am I moving something around while carrying it? I don't really know anything about computers, but I figured this had something to do with it.