Spoolsv.exe is the process for Spooler SubSystem App or Windows Print Spooler Service by Microsoft Windows. To stop this process from executing, go to Start->Run->Type "services.msc"->Ok->Search for Windows Print Spooler Service->Right Click on it->Choose "Disabled".
The process is a necessary part of the Windows Printing Service. It is located in C:\Windows\System32.
Is this the solution you were asking for? If not, please elaborate on what you want. Hope I helped.