I think here might be the possible answers

1. Initially Check Services, by ensuring Apache (or Nginx) and MySQL are running (e.g., via XAMPP/WAMP/LAMP).

2. Check for the Correct URL – Try http://127.0.0.1/phpmyadmin/ or ensure the case matches (e.g., phpMyAdmin on Linux).

3. Port Conflicts – Verify no other apps block ports 80 (Apache) or 3306 (MySQL).

4. Clear Cache – Use a private browser window or clear cookies/cache.

5. Logs – Check Apache’s `error.log` or PHP logs for clues.

6. If not try reinstall, by reinstalling phpMyAdmin if corrupted.

Quick Test:

- Create a test.php file with <?php phpinfo(); ?> if it loads, PHP works.

- Try accessing MySQL via command line (mysql -u root -p).