Drupal broken images

My problem is that drupal web site can not create image styles so i can not preview any image in the web site. The images look broken. I cahnged the file permision to 777, then 775 i tried almost every way but couldn't solve my problem. I think there is rewrite problem but i couldn' find solution. I have alook to error log it is empty. I use cyberpanel with litespped. Thanx a lot.
Anybody help me? i tried drupal in another server with cyber panel and the result is tbe same. Any body here use drupal with lite speed without image preview problem? Please help me.