Get rid of it now, smash it.. bash it.. burn it.. bin it.
It's BG's secret propaganda attack.
It was recently featured on BBC 1, news at 10.
Anyone who has this problem was advised to either wear ear muffs whilst operating the machine (Ear plugs will also work fine) or get rid of it.
I have been lucky enough to avoid these "possessed" machines, sounds like you have been a victim.
I just hope you didn't pay too much for your machine as well, as these strange windows systems are also programmed to self destruct when the propaganda has successfully lodged itself into your long term memory.
Complicated stuff I know, but seriously... Don't wait, till' it's too late.
If all the above fails, I have the number of a fantastic psychiatrist.