This always gets traced back to 3 things: bad pens, bad tablets (usually a broken cable), and bad drivers.
If you didn't follow Wacom's instructions on removing the old driver, then you may not have updated the driver correctly.
It works as it should on a different computer so its not a problem with either the tablet or pen (or cable).
So it definetly is the driver. Is there anyway, on a pc, that I can remove all drivers that have anything to do with a wacom tablet (both the intuos4 and bamboo) if there is anything left?
Cause I've done a regular uninstall several times from the control panel and the problem remains. So I'm assuming there has been some issue with the drivers in windows either with the intuos4 or with the old bamboo that causes the mess.
Yes, but you'll need to talk to Wacom and have them walk you through it (I don't know where all their settings are stored).