|I would install and run MalwareBytes for starters and see what it finds:|
(green button top right of page).
Also get this ADWCleaner file:
(blue download button near the top)
Save the file somewhere then double click the saved file to run it. It might find a stack of dubious toolbars when you do the Scan. It is usually OK to run the Clean but there are options.
Best paste both logs on here so that we can see what it found.
Always pop back and let us know the outcome - thanks
message edited by Derek