No Internet Access After Restore

My 64-bit Win7 Ultimate machine had a rather severe reaction to a piece of software I installed, resulting in the OS not loading. I was able to successfully restore the system and it is up now and running fine.

Here's where it is beyond my ken, though -- It shows that it has Internet access -- going straight through to the Internet. And I've even been able to access like one site briefly. Well, actually I accessed my own website and loaded a directory full of images. I was able to load a single image -- one that I was sure wasn't in the cache. But that was it. After that, I couldn't load anything. I tried three different browsers and they were all giving me equivalent messages. Firefox suggested my firewall might or a proxy might be the problem, so I disabled the firewall (I don't use a proxy server), but it didn't make any difference. I've even tried rebooting the system -- twice -- hoping that might unstick things, but no such luck.

I just took a look in Device Manager, and I see where something called the Microsoft Teredo Tunneling Adapter has problems. It says it cannot be started (code 10). I tried reloading the driver and it said the most current driver was loaded. I had no idea what this was, so I googled it and learned a bit about IPv4 vs IPv6 protocols, but that some folks just disable it and they're no worse for wear. Well, I don't have any new or recent hardware here that might need IPv6 so I'm thinking I can probably do without it as well. I tried disabling it, and it didn't make any difference.

I don't know how to troubleshoot Windows Internet access beyond this point. I mean, I open the Network and Sharing Center and it shows straight lines all the way to the Internet. And I know the 'net is working because I'm on it right now as I type out this post.

So, where else can I look? It must be something internal somewhere. And I know that I got through for at least a momentary blip since I was able to load that one image file that I honestly haven't looked at in years before access got choked off. Something appears to be throttling the connection at the computer, but I have no idea where to look.

Any ideas?

Thanks for your response.

Pinging 8.8.8.8. [8.8.8.8.] with 32 bytes of data
Reply from 8.8.8.8: bytes=32 time=42ms TTL=56
Reply from 8.8.8.8: bytes=32 time=29ms TTL=56
Reply from 8.8.8.8: bytes=32 time=29ms TTL=56
Reply from 8.8.8.8: bytes=32 time=30ms TTL=56

Ping statistics for 8.8.8.8.
Packets: Sent = 4, Received = 4, Lost = 0 <0% loss>,
Approximate round trip time in milli-seconds:
Minimum = 29ms, Maximum = 42ms, Average = 32ms

Sure looks like things are getting through to me. I went to Control Panel > Network and Sharing Center> Change Adapter Settings, and then double clicked on the adapter. Doing so opened up a little dialog window which showed data moving in and out of the machine over the network, and I presume over the Internet as well. 72Mbps.

So, now what?

Thanks for your response, Nihal.

The reply to your first command line entry:

Windows IP Configuration

Successfully flushed the DNS Resolver Cache

The reply to your second command line entry:

Successfully reset the Winsock Catalog.
You must restart the computer in order to complete the reset.

I'm restarting it now. Okay, no joy. I've just tried loading the Internet and I'm still getting the same messages in my browsers.

Here's some additional info:

Using Google Chrome, I get this response when trying to access an https site:

This site can't be reached

The connection was reset

Try:
Checking the connection
Checking the proxy and the firewall
Running Windows Network Diagnostics

I ran WND and got this:

Troubleshooting couldn't identify the problem

but I clicked on "View detailed information" at the bottom and got this:

No issues detected.

When I try accessing an http site, I get:

The xxxxx.com page isn't working

xxxx.com didn't send any data

ERR_EMPTY_RESPONSE

It's almost as if Chrome is blaming the sites I'm trying to connect to.

I'm just about at my wit's end. I'm seriously thinking right now about reinstalling the OS to get rid of the damned gremlin, no matter where it might be hiding. I'm reminded of an XP partition I had on another machine, however, that developed a problem with getting onto the Internet, which I was never able to solve, and reinstalling the OS didn't get rid of that gremlin.

Thanks again for the reply.

Well, good news! I didn't even have to go to Control Panel > Network and Internet blah blah blah . . .

I rebooted each time it told me to reboot, and after the last one, which occurred after " netsh int ip reset resetlog.txt", when the machine came back up, there was a message stating that a screenshot was present. So I went and looked at the screen shot, and I'll be dinged if I didn't do a double-take. Because the screenshot was a screen shot from this computer -- the other one, the one that's working, showing this very screen here at Seven forums, even with text I'd typed into this panel.

Now, how in the heck did it do that? (Twilight Zone theme here) Anyway, something told me as soon as I saw that graphic that everything was working again. I've just tried out all three browsers and they all appear to be working fine.

I doffs me hat to yeh, Nihal! Well, I hope to never have this problem again, but if I ever do, I know where to look to get things unstuck.

= Problem Solved =