sound random gone when reinstall firmware

[labas10]

i click on facebook like button and sound gone i heard pop sound ,,Like" not full sound. never happen before reinstall firmware!!, and when reinstalled firmware i press button home, and screen light up but screen brightness not bright, i set 30% when locked so when i press button home was 1% brightness or lower!!!! i didnt see anything!!! never happened before reinstall firmware i leave google play store apk and locked device, when i unlocked i see white screen and dont see google app store just white screen when i press home button and recent app to go to play store scree i see fine with icons