Yoshiba satellite L50-B905 no bootable device and can't log into bios

Sajaa

Estimable
Nov 26, 2014
5
0
4,510
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Hey,
I was trying to downgrade from windows 8.1 to windows 7, so i follow instruction on a youtube video which is changing
Secure boot = Disableed,
Virtualization Technology = Disabled,
Boot mode = CSM boot,
Function key mode = standard F1 - F12 mode
now when i start my laptop i get " no bootable device " and when i can't enter the bios " i've tryed F2, F10, F12, Delete, and Esc "
Any idea how can i fix it?
thank you
 
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