i have lenovo ideapad z500 have problem in booting from usb

[Akbar_10]

the problem is i made a bootble usb flash to install linux and my computer don't recognize the usb even in the bios setting ..plz help

 

[webworkings]

Well it could be that the particular USB you are using is not recognized by your machine. Also, if the OS was put on the drive just as a copy, rather than burned onto, it may also not read it.