I have a 2 week old Windows 8 Gateway PC that is wired to the internet through the Ethernet card and I have a wireless router connected too for my laptop and tablet. It's been working perfect for 2 weeks and so has my wireless on my laptop and tablet. Today I moved some things in the room and had to unplug everything. I put it all back the same and now only my wireless works on my laptop and tablet. The PC is showing limited access and when I run the diagnostics it says "Ethernet doesn't have a valid IP configuration" error message.
I have unplugged the wireless and connected the cable modem directly to the PC and it works fine. As soon as I route it through the wireless router it fails. Please I don't understand how I unplugged everything for only a few hours and then reconnected it exactly the same and now it doesn't work. I tried all 4 ports on the router, still nothing, I reset the TCI/IP, renewed the DNS, flushed the DNS, did a handstand, shook hands with a bear, ( so obviously I have done all the basics and more) I changed cords between router and cable, even so how come my wireless still works fine? There is nothing wrong with the antivirus, I don't have any viruses or malware, the computer hardly gets used, but today it won't suddenly work. Please, any suggestions. Thank you.