Welcome to the Community, CVM3. Let me provide some information on how to get your QuickBooks Desktop (QBDT) to open seamlessly. 

Before anything else, I appreciate you for performing the steps provided by my colleague. One reason QBDT isn't opening properly could be company file issues.

First, please ensure that your device meets the system requirements for QBDT. If everything looks good, I recommend re-installing the application. 

If the issue persists, I suggest contacting our phone or chat support. This way, they can provide a representative to check on your end to conduct further investigation to determine the root cause of this problem.

I'll leave this article on using the QBDT Tool Hub to fix common issues: Fix common problems and errors with the QuickBooks Desktop Tool Hub.

Keep in touch if you have further concerns about installing and opening QBDT on your new computer. I'm just one post away to help you out. Keep safe!