I've downloaded & run malawarebytes & [b]also Combofix,but not sure how to use Combofix[/b].
only to be run when instructed by a removal expert....

follow guide and attach logs (not copy and paste) http://forum.avast.com/index.php?topic=53253.0

Malwarebyters / OTL / aswMBR

also attach the combofix log…