Your comment in the first post gives me a clue. . . .
"limited or no connectivity to the network "
…because something like this happend to me recently, and I managed to see what caused it and fix it.
Something in your network likely got its “brains” scrambled, and powering it all off, top to bottom, even the most insignificant component, needs to be powered off for a few moments, and each item should be brought back in a logical sequence.
Here’s why I say this:
When I got the same message, I had my main Win7 PC on and using it (and thinking it was sluggish), so I booted up the WinXP machine. I happened to be sitting in front of it when I got the message that I had limited connectivity. I then did a bandwidth test from the Comcast test site: my usual 30mbps speed was around 6mbps. I checked the Win7 and it had the same low speed. Ah, it’s Comcast, ah, it’s the router. I checked the WDTV, hmmm, it could stream Netflix, etc, Weird. I gave up and went to bed.
The next morning I told my wife we had lousy bandwidth, and she said it seemed to be working for her PC. She did a speed test and got 30mbps. Hmmm, what’s different about her setup and the WDTV versus my PCs? Well, I have a Lynksys 4-port switch at both my PCs, she has none, and a different brand (D-link) was connected to the WDTV,
What to do? I pulled the power cord off the first Linksys switch, waited 10 or more seconds and plugged it in and I had 30mbps speed again! Did the same thing to the other switch, and got back the 30mbps speed. These switches have been connected for around 10 years, are always on and never caused a problem. Weird, again.
A couple of weeks later I had the same problem with the same switches. It was storm season, and one day the house power blinked for less than a second; the lights really never went out; neither did the network (so I thought). But a half hour later I tried to send a file from the PC to the WDTV hard drive and it said it would take a couple of hours and the transfer speed was in MB, not GB. That’s when I remembered the power blip. I removed (and renewed) power to the two 4-port switches and was up and running again. So, I suspect the switches never fully went off during the blip, as they would do in a full bore “power’s out for a while” condition. This situation scrambled their brains; and only the brains of the Linksys switches, not the D-Link.
Now, we have a fully wired cat5 house, and all network items connected are wired. (BTW, when I tested the PC’s wireless connectivity, that worked fine; another indication of a problem in the “wired” components) This situation has likely happened before, but usually power is off for as least longer that a split second. Besides, whenever I know power has gone off, I always reboot the system from modem to PCs, and all the gizmos connected to TV; incl. the TV. I remove all power from the entertainment system, too. When I do all this, I very likely often fixed some connectivity problems I didn’t know were there.
So, when I say to shut down all power for a few moments so things “really” turn off before power is restored, and do this for all units that are even remotely involved with one another (meaning, you can leave out the toaster) I am not kidding.
OK, so you do all this and things don’t improve? I would say then that a component that builds your network is bad; likely the router, switches, wires etc.
So, just 'cause the WDTV acts weird, don’t blame it right off; it could be being victimized by the “real” problem.
Good luck with the fix.