I don't usually need help with anything PC-related but I truly am stumped for this one, had to re-register to the forums after a long absence.
Here's the problem: Page Down seems to keep 'going off' randomly. So for instance when running my browser the page irritatingly scrolls downwards, shooting to the bottom. This'll happen a few times every 5 minutes. Especially annoying when in the middle of typing something!
First I removed the key entirely and cleaned underneath for dust.
This didn't help.
Then I downloaded some software that rearranges/disables keyboard keys and accordingly disabled the PgDn key. The button is now 'off' as far as pressing it is concerned.
Yet it still happens!
I ran a keylogger and it confirms that it is indeed PgDn that keeps going off at random.
I ran the computer in safemode, which would seem to write off the chances of it being a software issue.