Recently I have encountered a problem in which all my internet browsers are suddenly rendered useless at seemingly random intervals (every few days to every few weeks). My network connection remains intact, as, apparently, does my internet connection. However, my browsers (Firefox, Chrome, IE) give "page cannot be displayed" or "failed to establish network connection" errors when I attempt to access any HTTP/HTTPS site (including my router admin page which, of course, does not even require an internet connection to access) - and I continue to get these errors until I reboot my laptop.
I've yet to find the cause of this problem (nor has anyone else I've talked to), so I've just learned to live with it for now, knowing I can always fix it (albeit temporarily...and annoyingly) with a reboot. However, I would much prefer a quicker fix if possible - something I could do from Windows in a few seconds, rather than waiting for a full restart of my computer. Below is a list of what I've tried so far without success:
restarting all my browsers
refreshing the network connection
rebooting the modem
rebooting the router
resetting the network adapter
flushing the DNS cache
stopping/restarting Windows Explorer
Still, only a full laptop reboot will get my browsers working again. My question, then, is WHY? What other network/internet/browser-type things normally get reset when your computer gets restarted?
For the record I'm running Windows Vista Home Basic 32bit, SP1, on the laptop in question.
Thanks in advance for any help!