How to update BIOS on Windows mode: 1.Upzip this BIOS file in your local hard disk folder like C:\TEMP There will be three files in bios zip file, include JoybookS52_3AXX.EXE 2.Close all runnig application and jobs 3.Run the upzipped file like joybookS523XX.exe 4.follow the hint procedure by click Next 5.system will be automatically reboot 6.There will be a BIOS flashing screen after reboot 7.After finished flashing BIOS, system will reboot again to windows 8.It will show a message window:BIOS has been flashed