I have a new problem, and it is with keyboard input. I have to type very slowly to get my keystrokes to actually get entered. I need to hold down each key for at least one full second or press the key several times to type each keystroke. This occurs on all four keyboards I tried including a wireless Logitech that I'm using to type this. PC is Dell 560, OS Windows 10 Home. Can you offer any advice on this? The PC is practically useless like this. Thanks again.