yo bros I have some china oem latop bios for you guys . you can find them on other webside but they allways cost money or unusable chinese webside (IF FLASH WRONG VERSION BIOS GRAPHICCARD WILL NOT BE AVAILABLE BUT YOU CAN FLASH correct VERSION TO FIX IT)
this is mechrevo x6 (ntsn1511) Download
this is mechrevo x6s(ntsn1521) Download
this is fengmai s(ntsn1523) Download
if you dont know how to flash or which ver you should use you can ask me
if you have any hardware problem ask me for help
like graphic card dead without flashed wrong bios