I have been cursing and annoyed at my computer the last few weeks. When I am typing, the cursor bounces around and I can't even log on sometimes because of that. I was contemplating getting a new computer (maybe go back to an apple) or getting it fixed ($$$). I fretted about a virus. I even used my husband's computer to work on some travel reservations as it was getting so bad.
When it 1st started, I had mentioned it to dh and he didn't know what to do. I changed the batteries in the wireless mouse and keyboard. I complained about it again at dinner 2 days ago and he said, "Maybe the touch screen is going out. That would be bad." I frowned and said, why did I buy a computer with that? And my iphone does too and it gets beaten up worse than my computer. Then he said, "Maybe you need to clean your screen." DUH! perhaps the kids sticky fingers and cat hair all around has a effect. I wiped it all down and since then, no scrambling cursor or letters.
It's funny how the solution to the problem can be so simple and cheap and I didn't even think about it.