Ok any help if anyone is still reading this thread. Laptop works fine on other wireless networks. I have tried all the network shell commands listed (netsh). Uninstalled AVG, did a clean boot recommended by Microsoft. I uninstalled all the network adapters
and let Windows add them back, flushed the DNS cache through ipconfig, released and renewed the IP and still the same.
I have probably 10 plus other devices on the same router working fine including another Windows 8.1 computer, but a friend of my daughter brought over a laptop and it will not connect either via wireless or wired connection. Same issue as saying can't obtain
a valid IP address.
The IPv4 address is being automatically configured. I tried disabling that as well and no luck. Tried manually an IP address and DHCP address based on the settings from the router.
Stuck on this one and I hate it. I am good with computers and work in IT, but this one has got me puzzled.
One thing she did have installed is Hamachi for Minecraft which installs a virtual network adapter. I deleted that as well and still no luck, but don't know if there was something with that.
Any ideas or advice other than throwing it out the window (no pun intended) or saying screw it?