Hello vienna foutch,
Welcome to Microsoft Q&A forum.
Unfortunately, when an account is protected by 2FA, it means that normal recovery way is not possible. You will whether need to somehow get the code from the old computer. Or if your account is still logged in somewhere, change the verification methods.
I'm not sure if Microsoft Support could help in this. However, If you want to chat with a live agent, you can follow these steps.
- Type Live chat in the search box.
- Now click Get help, and Select Contact Support or Sign in to contact support below.
- Go to the Products and services tab, and choose Other products
- On the Category tab, choose Billing and Account Profile questions
- Go to Confirm.
- You can now choose the option of Chat with a support agent on your web browser.
Thank you for your understanding.