1 - The laptop's keyboard only works as if the caps lock is always on, but the external keyboard we have plugged in (so he doesn't wreck the real keyboard) works fine
2 - A pop-up website keeps coming up, saying we have won millions of dollars, if only we send money to claim it. This isn't like normal pop-ups, which we have blocked, but it's like it's always running in the background.
3 - The internet connection keeps dropping out, and the "work offline" in Files keeps being ticked. We un-tick it, but it automatically ticks it again.
The computer is divided into users, and these problems are all on my son's "side" only, mine is fine.
We are running Windows XP and IE (yes, I know...

Any ideas?