toshiba portege z935-st3n02 won't boot

[mrizaazhar]

my laptop, toshiba portege z935-st3n02, won't boot to windows. when I tried to boot from flash disk or cd, it won't work (I've rearranged the boot order). what should I do?

 

[webworkings]

What happens exactly when you try to turn it on (direct, without using a driver or disk) and also when trying to use a drive or disk?