Hi Sam.
I asked my IT people to help me with this. We got rid of all reference to ACECode that we could find. I then shut down the PC. On restart we received no progress - the PC went into a loop, appearing to attempt to access drivers. All a bit of a mystery. After spending a considerable amount of time and money, we got the PC up and running again. The verdict was that it was attempting to access a corrupt driver - Identity unknown. I have been advised to stay away from ACECode. I now have a robot vehicle to admire. Thanks for all the help from the forum. Cheers, Jon