Post Editor not working on WordPress 3.5.1

Recently i have updated my wp site to the latest version and since then post editor not working,

What i have tried:

• Disabled all plugins.
• Installed “Use Google Libraries”.
• Disable all plugins except “Use Google Libraries”.
• Re-install WordPress from the update panel.

Followed some solutions on WordPress support:

Adding this line in wp-config.php

Solution #1:

define('SCRIPT_DEBUG', true);

Solution #2:

define('CONCATENATE_SCRIPTS', false );

i have tried all of the above methods and none of them worked for me.
please help me with this issue because i can’t able to update my website 🙁