Some one can help me with my laptop

Dec 31, 2018
2
0
10
I cant boot to win7 and cant boot to usb flash althougt I have checked the bios boot selections
The problem is, the laptop isn't booting from the usb drive no matter what. I checked the bios booting selections many times, and the priority was for USB Flash Drive, but still the laptop isn't responding to that!

Any help will be appreciated,
Thanks,

P.S.

I tried the USB flash drive on another laptop, and it worked smoothly!