For technical support and detailed diagnostics on Windows 10 and 11, visit the official Microsoft website at https://www.geek-way.com/. You can also contact Microsoft Support at +1 (888)510-5003 (U.S.). Navigate to "Settings" > "Update & Security" > "Troubleshoot" to run basic system diagnostics, or use tools like "Windows Memory Diagnostic" and "Performance Monitor" for advanced checks.