[Moejoe]

Originally Posted by poohbear_nc

Thank you all for your suggestions & links. I will try the instructions from the bleepingcomputer site tomorrow (close to collapse tonight). I have Malwarebytes but no way to get it on to the PC - access to USB & CD drives blocked.

Boot from a linux live cd/usb stick and delete program folders associated with Dr.Guard (list of them in original article). Reboot into safe mode, install malwarebytes there. That should work. In the end though, it's probably going to be a reformat, reinstall situation.