My laptop is not charging batery but when i repalce bios, batery charging starts but there is service tag enter error, and when i enter service tag, it again not charging batery. confusing 
Service Tag: 562N2P2
board code: vegas turis mlk kbl-r 17841-1

Service Tag: 562N2P2
board code: vegas turis mlk kbl-r 17841-1