Errors all the time

[Aleksandar Plavsic]

I keep getting errors like Unfourtinately process android.process.media,process android.process.gapps and settings,contacts or messaging has stopped working,almost nothing is working on my phone sd card,camera,file menager etc... I menaged to factory reset my phone using the quick button+volume button+power button,and it havent helped :/ I was using rooted lg optimus l7 II p710 android 4.1.2 device...That error started popping up when i restarted it once just because it was up for a few days...I also cant connect to pc because it says settings has stoped working...Also,is there a way i can unroot my phone before giving it warranty(If it cant be helped) because in Serbia they wont fix it for free if my phone is rooted.

 

[VDub2174]

Can you still boot into recovery?