Troubleshoot an unresponsive laptop:

1. Check connections & cables.
   
2. Unplug any peripheral devices.
   
3. Restart laptop using hard power button.
   
4. Check internal operation specifications.
   
5. Check system-level updates.
   
6. Remove memory modules & reinstall.
   
7. Check internal systems & diagnostics.
   
8. Replace any non-functioning hardware components.