Unable To Solve DNS Server Not-Responding Issue

Hello friends. I have not been able to solve a computer’s internet problem for the last 2 days, that is, every time I try to connect the Internet to my computer, the DNS server not responding, the error is showing. I am currently using the internet from my mobile phone. This is why I’m having so much trouble using my computer. Guys, I don’t know why this is happening and how to fix this issue. Please help me to solve the problem. Any help will be appreciated.

Do you have the DNS set in your router?

Thanks for replying. I already insert a DNS (Primary and Secondary also) in my router.

What DNS did you use?

What are you getting when you do dns lookups at the command line?

So, after searching on Google I found a solution from here today. The issue is fixed after applying a process mentioned there. I just used some commands like
ipconfig /flushdns
ipconfig /registerdns
ipconfig /release
ipconfig /renew
the issue is fixed.

that’s a DHCP refresh. Your setup was/is incorrect.