Sometimes I get kicked off the internet and it tells me I have no internet access. So I have to disconnect and reconnect.
Further along in post jialiang123 referenced I've made a post regarding the issue here and new drivers have been made available as of early this week. Give those a try.
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I had the same issue until a techy in my office did the trick and it worked. All he told me that windows 8 works better with drivers for windows 7 and that he uninstalled windows 8 drivers and installed windows 7 drivers.
it is working since then, over 12 hrs of non stop connectivity.