I am sorry for your issue.
So I understand that your Intel® wireless adapter remains properly connected to the access point but not to the internet. I have some questions in order to have a better picture of the issue:
Would you please indicate the status of the wireless connection in the Windows* system tray icon (Limited, No internet access, Internet access…)?
Does this happen with Intel® Proset Software as well as with the Windows* Wireless Auto-Config?
What results are obtained after a “ping –t” test to the default gateway and to an internet site (URL)?
What happens to the connection when using default router settings? Does this happen when using a different router?