Hello, I'm encountering a problem since i purchased this service router. This is the particular one I'm talking about: https://www.getitequip.com/Cisco-ISR4451-UCSE-S-K9-Routers-&-accessories
I have tried to troubleshoot but it is not fixing it. I have read many guides online but no one is working for me. Is this hardware fault? Should I return it or is there any solution how to fix it?