Hi! Thanks for reaching out. I want to make sure I understand your issue correctly — when you try to log into the MyChart app, you don't see the dialog box where you would normally enter your username, is that right? Just to clarify, are you using the MyChart app on your Windows device, or are you accessing it through a web browser on Windows 6.1? Also, is the screen completely blank or do you see other parts of the login page?

This info will help me guide you better. In the meantime, here are some general steps we can try to get that input box to appear:

1. Refresh or Restart: If you’re on a browser, try refreshing the page or closing and reopening the browser. If using the app, close and restart the app.

2. Clear Cache and Cookies: Sometimes, stored data can cause display issues. In your browser (like Chrome or Firefox), clear the cache and cookies and then try again.

3. Update or Reinstall the App: If you're using the MyChart app, make sure it’s updated. Since you're on Windows 6.1, if this is the desktop app, ensure it’s compatible or reinstall it to fix glitches.

4. Try a Different Browser: If using a web browser, try logging in on another one like Edge or Firefox.

5. Disable Pop-up Blockers or Browser Extensions: Sometimes extensions interfere with dialogs appearing. Temporarily disable them and check if the username box appears.

Could you please try these and tell me what you see? If the problem persists, I can guide you to more specific troubleshooting steps.

Looking forward to your reply!