Johann seez

what actually you want to do?

you can used CSS sprites .

Firstly try to access wp-login.php instead of wp-admin.
If the issue still persists, go to wp-content/plugins, start removing a plugin one by one, perhaps a rogue plugin is doing this.
After that you might want to check the database for some options.
If it still persists, please describe when did the issue start, after what changes etc.

Thanks teszter to tell me solutions.