Based on the information you provided, it seems like you are experiencing issues with Valorant not starting despite updating your GPU drivers, Windows, and ensuring that the Vanguard service is running. Here are some additional steps you can try to troubleshoot and potentially fix the issue:
1. Run Valorant as an Administrator: Right-click on the Valorant shortcut or executable, then select "Run as administrator" to see if it helps with launching the game.
2. Check Antivirus/Firewall Settings: Sometimes, security software can interfere with the game's launch. Temporarily disable your antivirus or firewall and try launching Valorant again.
3. Check for Background Applications: Close any unnecessary background applications that may be conflicting with Valorant. You can use Task Manager to end processes that are not essential.
4. Repair or Reinstall Valorant: Use the Riot Games client to repair or reinstall Valorant. This can help in fixing any corrupted game files that may be causing the issue.
5. Update DirectX and Visual C++ Redistributable: Make sure your system has the latest version of DirectX and Visual C++ Redistributable packages installed. You can download and install them from the Microsoft website.
6. Check for System Updates: Ensure that your operating system is fully up to date, including all Windows Updates.
7. Check System Requirements: Verify that your system meets the minimum requirements to run Valorant. Your GPU, although older, should be able to run the game. However, it may struggle with performance due to its limitations.
If after trying these steps the issue persists, you may want to reach out to Riot Games support for further assistance. Provide them with the details of the issue and any error messages you encounter for a more targeted resolution.
I hope these suggestions help in resolving the problem so you can start playing Valorant again. Let me know if you need further assistance!