Windows 10: I cant use my home wifi

I cant use the Wireless Internet at home on my private network but Ethernet works just fine. It connects to the WiFi and everything looks fine but whenever I use a browser or anything that uses network connection. I can load search engine results Page But i cant Open Any of the webpages shown. I cant even use Speed Test. I know that’s the problem has something to do with my pc because it works fine for my brother. I tried it on someone Elses Network and it worked fine.

:)