I went to the below link and what worked for two different client machines was the following.
download Rkill and TDSSKILLER onto a usb stick.
Reboot into safe mode with networking
Run Rkill - this will pinpoint the where the location of the virus might be.
Then after running RKILL run TDSSKILLER, this will pick on the infected file and remove/cure it.
This might require a reboot, if it does reboot back into safe mode with networking and test if google redirection has rectified itself.
(i dont know if im allowed to post this but it taken me 5 to 6 hours to find a solution) I hope this helps anyone