Hi, I'm Elise, and I'd be happy to help with your issue.
If you open file explore and type in the address bar and press enter:
\192.168.0.1
But replace this IP with the actual address of your router, this may allow access.
It may also be that you need to enable the SMBv1 protocol to access the device, can you try follow these steps if you still cannot access.
Open Control Panel.
Click on Programs.
Click on Turn Windows features on or off link.
Expand the SMB 1.0/CIFS File Sharing Support option.
Check the SMB 1.0/CIFS Client option.
Click the OK button.
Click the Restart now button.
Please let me know if you need any further assistance.
Kind Regards,
Elise