One menu is not working Поделиться Опции

[VenoMan]

When i was transfering files between my pc and my phone one of the menu-s stopped working.I don't know what i did but in settings/sound specifications(i don't know it in english)/kind of ringins---> this menu where you can change the sms ringtone,the volume of the ringing,the melody of the phone etc...When i go change on that it returns me in the main menu.How can i fix it? May be if i restart the software,but i don't know how and will that solute the problem.If someone know how to fix it please help?Or tell me other way to change the sms ringtone and the volume of the ringing.10x