Re: Dell Inspiron 17R SE 7720 is unable to connect via wireless

Hi KoolGuy,

Check the wireless connection in Safe mode with networking (restart the computer and tapping F8 on dell logo. Select Safemode with networking).If issue persists in Safe mode with networking, try updating the update the wireless router's firmware to the latest available.

Update wireless drivers:

http://dell.to/Y2FbBZ

For more information, I have provided a link below which can fix the issue:

http://dell.to/K96578

Below mentioned link would also help you with the settings for wireless internet:

http://dell.to/ZKyq8W

Please let me know if you have any other queries.