I have been following this following post because I have pretty much the same issue.
I have been through all of the steps that the original poster did in terms of flushdns, winsock fix, etc. etc. but also have not had any success.
I have downloaded most of the utilities that InadequateInfirmity
had the original poster do but need someone to interpret the results.
Some points to note
My technical level is High
I have no internet on either wireless or ethernet connections.
I can see the laptop on the network from my router.
Other computers and devices are working on the same router.
I am getting an IP address on the ethernet connection but not the wireless.
I cannot Ping anything
I have performed malware and virus scans
Does not work in safe mode either.
Norton 360 was installed and I uninstalled it with the Norton Removal Tool.
I updated the driver for the ethernet. The driver for the wireless is for Windows 8.1
running Windows 10 Anniv Edition
Any help would be greatly appreciated. I've pretty much exhausted my knowledge base!