Some functions in Word are extremely slow; printing, page setup in in Excel, loading of files, etc. I've run a complete virus scan and malicious software scan an nothing was detected. It has been suggested to me to format my hard drive and start from scratch. I want to use MS file and settings transfer wizard but am concerned that I'll be transfering any undetected virus or mal ware. Is this true and is it safer for me to pick and choose the files I want to keep?