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attempting to boot from USB device not working

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HP Compaq

i've got a computer that the OS crashed on, i wiped and when to install another windows on it. however, ive got win 10 on a usb drive, and i have a product key for it. its just not wanting to load it up at all. i've tried changing the boot up order, nothing. im at a lost here on how to install it. i dont have the orginal disk for it, just my backup of win 10

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> I've got win 10 on a USB drive, and I have a product key for it. 


Since your computer was running Windows 10, you have been granted a "digital entitlement" to reinstall Windows 10, at any time, at no cost, onto the same computer.



to download the "1709 Windows 10 Fall Creators Update", and to write it to an 8GB USB memory-stick, or to "burn" it to one DVD-writeable media.


Then, boot your computer from that media.


When prompted to enter the 25-character product-key, click "I do not have one".

Windows will complete the install.

When Windows detects an Internet connection, it will leverage your entitlement, and automatically "activate", i.e., no need to enter any product-key.


Then, run Windows Update, to download & install all the latest security-updates (including today's -- being the 2nd Tuesday of the month).


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