Can you use a browser to open your router's web interface
http://192.168.1.1
If not you may want to try
1: shutting down everything and resetting your entire network. All computers, your ISP's device, and reset the router to factory defaults (usually a pin hole on the back or bottom) Make sure you device is trusted and not firewalled at the router.
2: Make sure the native Windows 8 Firewall is not blocking either port 80 or http protocol
3. Attempt to run you router without encryption briefly to test and see if that results in any different results. Then turn security back on. And experiment with WEP, WPA, WPA2, (AES vs. TKIP), etc.,
4. Consider removing Eset again maybe even follow up with the vendor specific proprietary removal tool just to be sure that all remnants are gone
How do I manually uninstall my Windows ESET security product? - ESET Knowledgebase
5. Make sure there are no other 3rd part firewall products or security suites in play.
6. If you have experimented with any third party software like Connectify or even the Native Microsoft Hosted Network setup (turns you wireless adapter into a hotspot) please remove it.
You said earlier that you can ping other hosts including websites. Can you ping by name or only by IP address