My website has been hit by google.com and dropped the ranking in search engines. if i change its server from india to USA. So is there will be any Significant change by shifting server. if any body has any idea pls tell me.
Sorry dude, but there will be no benefit by shifting server from India to USA. Because Google has penalized your DNS (domain name) which is a number series so if you shift your server , your DNS will still remain same.
what you can do is first look onto the manual action page of google webmaster and if you are seeing any messages that your site is pointing towards unnatural links then immediately remove that backlinks you will automatically get ranking in the Google.