No login background

[Westechy]

when i boot up my hack the login screen doesnt have any background picture in it, i installed the multibeast drivers of which i needed and solved the apple logo not being there but the background at the login screen is not showing properly

 

[BreBo]

when i boot up my hack the login screen doesnt have any background picture in it, i installed the multibeast drivers of which i needed and solved the apple logo not being there but the background at the login screen is not showing properly

The login screen background is a static image that gets generated once and then saved in /Library/Caches/com.apple.desktop.admin.png

To regenerate the image, all you need to do is change your desktop background (a.k.a. wallpaper).
Then check that file and make sure it's fixed.