I've been having this issue ever since I bought my new laptop months ago. It's an HP Pavilion dv7 running Windows 7. I'm pretty sure the problem is with the computer, not with the router, as I've had this identical issue with a number of different ISPs and router brands in different areas of the country. Every hour or two I'll lose access to the internet, though I'll remain connected to the router. The troubleshooter will advise me to reset it, and that always works - for an hour or two, then the issue comes back up. Is there some setting on my computer that's doing this?