I have been facing a peculiar type of problem since 2 hrs..
when i try to open google.com website , i get an error..

404 Not Found
nginx

is any of you facing such a problem??

how to solve it?

Cant even search on google for this error

No problem here.
Google.com and Google.co.in is running fine for me. Sometimes Google too has problems. Don't worry it will be solved soon.