My brother's operating system is Windows XP protected by McAfee.
However the computer has now been infected by a Malware Doctor resulting in a pop up screen saying "scanning files" and this pop up can't be removed. Since this infection appeared all attempts to connect to the internet have failed with a new message saying "google re-direct".
I have tried to use McAfee to remove this programme without success and am unable to reboot system to factory settings.
I would try and download the Hijack tools but am not sure how to do this as I can't access the internet on the infected computer.