You will need to reset your urls in Settings General I have videos on how to rest urls on my website and you can instructions here
http://codex.wordpress.org/Changing_The_Site_URL
Hi govpatel, Thanks for you reply.
The problem is that I can’t even access to the General->settings now because I changed the value of “WordPress address (URL)”.
When I tried http://xyz.com/wp-admin to change it back, it always forwards me to http://xyz.com/about/wp-admin, but http://xyz.com/about/wp-admin doesn’t exist.
You will have to access the database to change the value of the siteurl.
Using phpMyAdmin or similar tool, you’ll need to go to the wp_options table, search for “siteurl” in the “meta_key” field. Remove the “about” from the “meta_value” in that record.
Your webhost tech support may be able to help if you are uncomfortable doing this yourself. Alternately, you may be able to get someone to write a quick snippet of code using wpquestions.com or jobs.wordpress.net to set the value correctly.
I solved the problem now. Thanks for the your instructions.
I actually logged into wp’s mysql database and change the value back to the old URL. It’s the second row of wp_options with the value “siteurl” of “option_name”