After about half an hour from booting up, my wireless connection says it's connected to my router, but with no internet access. If I try to open Network and Sharing Center, the window hangs and doesn't respond at all. I've run full scans with both Avast and Malwarebytes and both results came totally clean and my system is up to date. Restarting after that connection is lost will log me off and go into the "Shutting Down" part of the screen, but it hangs there, not doing anything at all. The only way to restart from that is to hold down the power button and force it to shut down. I'd really like to get this fixed, as it's very annoying to suddenly lose my connection like that.