How to forcefully update nameservers if my PC is still pointing towards the old server IP? [Important]
If you have updated the nameservers of your domain then try checking it from cmd. Ping your domain name and find out the IP address where is it actually pointing. If it shows the IP address of your existing hosting provider then its all good.
Then i think this can happen due to the recent change of nameservers your internet DNS router might be unaware of the nameserver change due to which it is still pointing towards old IP and old server IP might have suspended or terminated your files in server.
Steps to forcefully update nameservers if my PC is still pointing towards the old server IP: [Updated May 2019]
step#1 Try to restart the router if you are using internet connection via router,
step#2 Restart your PC
step#3 If you are using your mobile then put your mobile to flight mode and wait for sometime then put off the flight mode.
step#4 Or else you can install DNS Angel This application will allow you to change the DNS IP easily so that even if your system is unaware of the nameservers change it will automatically fetch the current nameservers from the DNS and allow you to access your server.