Cannot made a bootable USB Flash Drive

I am trying to make myself a bootable USB flash drive. I followed the instructions on this page:
My PC does not boot from it when it is started up. The same PC will boot from a Windows 10 USB flash drive.
Also, my bootable USB flash drive will start up when I use MobaLiveCD to test it.
Can anyone suggest what the problem might be?
Thank you
Now ThenNot applicableAsked:
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dbruntonQuid, Me Anxius Sum?  Illegitimi non carborundum.Commented:
Use these instructions  rather than the ones on the Hirens site.  And Rufus  is a very good util that you should have on your machine.  The link I've supplied for Rufus is the official site. might have the official link but I've supplied it just in case.
Now ThenNot applicableAuthor Commented:
My apologies.
dbruntonQuid, Me Anxius Sum?  Illegitimi non carborundum.Commented:
I'm not sure if the rule on Hirens still applies.  There were some changes in policy a while ago.  I'm sure some mod will comment on what the rule is now.
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Jackie ManIT ManagerCommented:

You need Rufus or Universal USB Installer to do the trick.

The link in your question is outdated and will not work for Windows 10.
you don't need any tools - use the inbuilt diskpart :
Turn off secureboot iin your bios and verify that legacy booting is enabled.

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Now ThenNot applicableAuthor Commented:
Thank you for all your comments, many of which were useful. However, McKnife solved the problem. Thank you.
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Windows 10

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