Unable to open the some of important website?

I am not a real computer expert, but you may want to check is your internet connection connected correctly. Also, you may want to use some anti-virus programs to see if you have any infection. Hope this can help.

Hi santhonyraj, this problem might be due to your ISP's server getting into unaffordable traffic, or the server might be too busy to take more requests. Another problem would be with proxy settings. Anyway you can do some basic things to troubleshoot this problem. One method is to override your proxy settings by manually configuring a proxy and divert your HTTP requests through that proxy server. You can find a lot of free proxy servers by just searching internet. Open your browser, go to internet connection settings, and under the section proxy setings choose to manually configure a proxy and enter the proxy address with port number. These settings differ in different web browsers. You can search for how to configure proxy for the browser you use. I think this would resolve the problem mostly. If you still cannot get around this issue, make sure your system isnt infected by any malwares/backdoors. For the final step, you should contact your ISP if nothing works. They can identify and resolve your problem as soon as possible.

Yeah santhonyraj i do agree on this with you as of now computer is also mine favorite daily activity while at home as