QuickBooks technical support have very high skilled and trained technicians who have the expertise in every aspect of QuickBooks and thus they can help you with step-wise solution. But, still I will write the solution so that you try once before anyway connecting to the Pro advisor QuickBooks. So, taking your query forward QuickBooks are specially designed compatible with Windows 7 and if you still encounter any problem. Then, the problem must be with either installation or activation or with emailing or printing the .pdf files.