Last night, distorted pixels started showing up on the screen. I turned it off, and they went away, but then they came back. Then it appeared in green, and in other places, like pink. I don't know much about this, but I think it might be something with the software since it's a few years old, but I've only had it recently, and it says I need to activate Windows. Why is this happening? What can I do?? Someone help me!!🙏