LAPTOP SERIAL NO IS- CND5261PWV
MODEL NO - 250 G4
PRODUCT NO - NO C12PA#ABG
PROBLEM - WHEN BIOS MODE CHANGE TO LAGACY IT STOP GIVING DISPLAY
AND AFTER CMOS RESET IT GIVIS DISPLAY
AND I WANT TO INSTALL WINDOWS 7 AND WINDOWS 8.1 PLZ PERPARE BIOS WITH NO WINDOWS SERIAL AND LAGACY SUPPORT