No access CIO My Book Live from my PC

I have got a new rooter. After that I cannot find My Book Live. I get the message:" the unit do not allow the connection". Can anyone help me with that problem? It worked before I changed the rooter to a new and faster one. My Book Live work with my smart TV. No problem there. I run windows 8

You probably have the IP address on the MBL set to Static. 

Hook up your old router to the MBL.  Use Dashboard to set the Network settings to DHCP.  Power down teh MBL using the dashboard.  Hook up the new router to teh MBL and power up.