hi i have a toshiba i am not change the os through usb it will come unet boot in how can i solve it

[Sanjeeva]

hi i have a toshiba i am not change the os through usb it will come unet boot in how can i solve it

 

[popatim]

When you boot he pc from a powered off condition, watch the screen for the message that looks like 'Select Boot Device' and press the F-key it says to. Then select the boot device.