Open the QuickBooks Tool Hub. In the tools hub, select Installation Issues. Select QuickBooks Install Diagnostic Tool. QuickBooks POS, QuickBooks Won't Open, QuickBooks Won t Open, QuickBooks POS System, QuickBooks POS Hardware QuickBooks Desktop is not installed correctly. Create a sample file in QuickBooks and if you get an error while creating it that means there is an installation issue with QuickBooks. Sometimes, software like QuickBooks does not start when its installation has not been done in the proper way. Along with this, the system on which the software is used can also have problems.