remove battery and hard disk first with clean ram into addition ram insert step 2 : first power on the laptop to see display on or not (check) if On laptop will applied (step 3 method) step3: power cable insert first Next Insert the USB flash drive with the BIOS file into an available USB port on the notebook. Press and hold the Windows key and the B key at the same time, and then press and hold the Power button for 2 to 3 seconds. note: On some notebook models, it might be necessary to press and hold the Windows key and the V key. any doubt watch this vidoes : https://www.youtube.com/watch?v=zjAZ0DTX... then will not on laptop step 4: buy sp bios flash toolskit and learn applied bios flash