Build prop editing help!

Before I start: The info. SM-G530AZ still on 4.4.4. KitKat. Rooted. Basically I was being stupid and decided to change my lcd density from 200 to 160 or 180 i cant remember when i rebooted it says "Unfortunately the process com.android.systemui has stopped" everytime i press ok 3 seconds later it comes back up nothing happens when i press the apps on the home screen the app drawer doesnt work the notification bar doesnt work. The only things ive seen work holding the power button down and changing sound.:( ive heard about adb but not sure if it will work because my phone doesnt display whenever i connect it to my computer any falshables or alternate fixes would help plz i need this

Build prop

I deleted build prop with no back up. Phone will not boot up. Samsung Galaxy s4 straight talk