So what is happening? On random occasions when I turn on my computer, and open any browser (Firefox, IE, or Chrome), although the browsers open none of them will be able to access my homepage or ANY website. But here's the key point: the browsers don't even try!!! Instantly, and I mean INSTANTLY, they will indicate that the webpage is not available. It's exactly as though I'm offline!! And yet, the browser doesn't say that, it just thinks the web page is unavailable. And if I click on "File" it will not have a check mark next to "Work offline". But the browser (and when one is afflicted, all are) is acting as though I am working offline, in that it won't make any real attempt to connect to ANY website, no matter which one I might try.
The only thing I could think of to try was to put a check mark next to "Work offline" and then click again to remove it, but that had no effect. I tried logging off but not shutting down my computer, but that too didn't work. Even restarting the computer works only because this is a random event that happens perhaps 1/5 of the time when I start the computer, so that I'm sure at some point when I restart the computer, it WILL happen again immediately. Let me emphasize that it has never happened in the middle of a session. Once I get internet access, I have it until I turn my computer off. Also, I'm pretty sure it has absolutely nothing to do with my DSL connection, which is fine--I've experimented during these episodes by turning my modem off, starting it again, etc. and it's had no effect.
So, in summary, sometimes, randomly, when I turn my computer on, it behaves as if I'm in offline mode but I'm not. It won't connect to any website and doesn't even try to, but doesn't recognize that it's acting in offline mode and instead thinks that there's a problem with the website I'm tryng to access, even though there isn't.
Please help before I lose my ability to get online altogether!!!