Can you try some basic troubleshooting by opening a command prompt. Type PING google.com? Do you get a response. If so, you are connected to the internet.
Not being able to browse can be caused by a variety of issues. First thing to check is for malware. Do you have an antimalware client installed? Is it up to date? I would suggest that you download and scan your computer with Malwarebytes. Is your windows OS up to date on patches? not sure, visit windowsupdate.microsoft.com
JorgeM
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