Try the uninstaller click here Are you sure he has not authorised a nasty when he clicked an attachment?
Spybot, A2 and Adaware all free work with Vista, if you want to see if there are nasties.
Incidentally Avast free works really well on Vista.
OnePlus 5T review: Hands-on
Illustrator Andrés Lozano on his improv line work, brazen use of colours & hand sketching
iPhone X review
Comment envoyer gratuitement des gros fichiers ?