Edit the registry:
https://msdn.microsoft.com/en-us/library/aa380804(v=vs.85).aspx[
^]
However...if this is a company machine you are doing this to in order to prevent the company accessing your machine, then be aware that you may be committing a disciplinary offence, depending on the company. It's company equipment, you are a company employee: they do (in every jurisdiction I know of) have a right to do as they see fit with it - and if that's company policy, you are opening yourself up to a world of pain if you start messing with it. Particularly as the suspicion is that you will be doing "private stuff" in work time that you don't want them to know about...
Your call: but I'd be very, very careful if I was you...