Thanks for joining this thread. Allow me to jump in for a moment and help make sure that you can print payroll checks in QuickBooks.
Just to clarify, are you using QuickBooks Online (QBO)? If so, the steps that my colleague provided above should help you change or choose the preprinted check stock in the settings. I will add some sample screenshots below to help guide you through.
Once done, you can now print your employee's paycheck. For your reference, you can check out this article for further guidance: Reprint pay stubs or paychecks.
That should do it! Please let me know how it goes or if you're referring to something else by leaving a comment. I'd be glad to answer if you have any additional questions or concern. Have a beautiful day.