I've been having this problem for only the last week or so where my internet will stop working until I restart my computer, even though it says I am connected and internet is available. The problem is not with my modem or my router. The internet works fine on every other computer. I've run multiple antivirus scans on multiple programs. Clean. Drivers are up to date. Sometimes it disconnects after five minutes, sometimes forty, sometimes hours. I'm at a loss. Any ideas?