sorry for my bad English first, it's not my native language Before I try modify this labtop's BIOS. I had mod some mainboard BIOS by myself and success. but this bios defeat me. here is bios download link cdgenp01.csd.toshiba.com/content/support/downloads/ska8v630.exe I unzip bios file ska8v630.exe and find out another executable file then unzip it again got 5 more executable file, I know two of them is bios file name DR10F630.EXE and DR10F863.EXE DR10F630.EXE for Windows 7 DR10F863.EXE for Windows 8 unzip DR10F630.EXE to get bios file DR10F630.FD and platform.ini I found some tread, those tread guide me find out platform.ini because this file control what kind data will be flash in bios. I need find my labtop P/N in platform.ini then change it's position. let flash program consider my labtop had slic 2.1 before but I can't find it in platform.ini my labtop P/N is PSKAET-00N002 It's mean my step wrong? or I find wrong file? one more question if I modify bios file done, how to zip them back? just open file with 7-zip, then drop file in same folder? Sincerely thank you for your answer