run a virus scan, I have AVG installed on my parents' PC: http://free.avg.com/ie-en/homepage
use Microsoft Safety Scanner: http://www.microsoft.com/security/sc...s/default.aspx
also MalwareBytes: https://www.malwarebytes.org/
then install either OpenOffice.org - https://www.openoffice.org/ - or LibreOffice - http://www.libreoffice.org/
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