Hello, have you tried changing device boot orderfrom BIOS?
you should change device boot order or press the appropriate button (commonly F10) during POST (when laptop starts to initialy work, it writes which button the first 5seconds that it starts to work) and then you will see a box that shows all the availiable devices to try to boot from. All computers and laptops can boot from any internal or usb if these devices work properly and have a proper image to boot from.
Thanks for the suggestion, but I had already moved "Optical drive" to the top
of the "boot order" list. Also there is no "USB" device shown in the "Boot" menu
of the "Startup" screen! Very annoying to say the least! Thansk again...
in some old models there was in Bios, an option that said "try other boot devices yes/no". It seems strange such a new laptop not having boot from usb in boot order.
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