If you want to reinstall QuickBooks, you might not hear about little something from Intuit: The clean uninstall. Before you proceed to reinstall,uninstall QuickBooks using the following standard Windows uninstall methods:
#Go back and delete the C:\Program Files\Intuit\QuickBooksXXX directory (where XXX is the release number)
#Delete the C:\Windows\Users\Documents And Settings\Program Data\Intuit\QuickBooksXXX directories (Here, XXX is the release number).
Whenever you are dealing such with QuickBooks, BACK UP YOUR DATA FIRST!
For more support services and resolution of your issues & Queries, Contact our QB support team by just dialing QuickBooks Online phone number +1–844–551–9757.