If you do not wish to run QVSource under the administrator account you can follow these instructions to configure it to run under a standard user account.
Step 1 - Create A User Account
You should create a user account in the standard computer management interface, in our example we use the name QVSource:

In this example we use a local security account but the process is the similar if you use a domain account.
Step 2 - Give User Account 'Log on as batch job' permission
In the Local Security Policy (assuming you are using a local account) make sure that the user you created has the 'Log on as a batch job' permission.

Step 3 - Give User Account Full Control Over QVSource Directory
Finally, you should give this user account full read/write access to the directory under which QVSource is running (and also any additional folders necessary, for example if you have configured QVSource to use an
alternative caching directory.
You should now be able to use this account for the
scheduled task you create to ensure QVSource stays up and running.