I have a home network where a machine running Windows 7 Ultimate N acts as a central hub for other devices to access media. This has been running for around 2 years now and there has been no recent configuration changes.

The machine has a static IP address (192.168.0.3), which also has not been changed. A few laptops, Sonos music system and mobiles are using the machine for music/video mostly.

Additionally, post 3389 was also open for RDP. I used a no-ip agent to map a hostname so I could RDP to the machine from the internet.

As of yesterday when I try to ping the machine, I get

PING:Transmit Failed, General Error

I noticed however, the IP it is pinging is 0.0.2.233. All shares etc are no longer functioning including RDP.

On the machine itself, an IP config shows like nothing has changed. It still shows the expected IP. If I ping itself from its hostname, I get the same error as above.

machine has been rebooted, the router has been also.

Any ideas where to even start on this?