First, you did not specify which version of FreeNAS you are installing, very important to know.
Some bootloaders are very picky on what hardware they will load from. I would recommend you only use Legacy BIOS mode and not use UEFI as this will generally make it more compatible. I take it your primary language is not English, I say that due to your sentence structure. Please take your time writing your posts so we are fully understanding what you are saying, but so far I think I understand. I say this because you will get better answers and probably faster ones with clear communications.
You may need to burn the ISO image to a CD-ROM and boot from a CD/DVD drive. This will likely be your best action moving forward. The other option is to find a different tool to burn the ISO to the USB Flash Drive, sometimes others work much better.
Just because Windoze 10 boots unfortunately doesn't mean FreeNAS will boot. The closest thing to FreeNAS is FreeBSD 12. You could try to install that, if it works then post your results. You can also try a different version of FreeNAS if you desire just to see if it will install.
Good Luck
First, you did not specify which version of FreeNAS you are installing, very important to know.
Some bootloaders are very picky on what hardware they will load from. I would recommend you only use Legacy BIOS mode and not use UEFI as this will generally make it more compatible. I take it your primary language is not English, I say that due to your sentence structure. Please take your time writing your posts so we are fully understanding what you are saying, but so far I think I understand. I say this because you will get better answers and probably faster ones with clear communications.
You may need to burn the ISO image to a CD-ROM and boot from a CD/DVD drive. This will likely be your best action moving forward. The other option is to find a different tool to burn the ISO to the USB Flash Drive, sometimes others work much better.
Just because Windoze 10 boots unfortunately doesn't mean FreeNAS will boot. The closest thing to FreeNAS is FreeBSD 12. You could try to install that, if it works then post your results. You can also try a different version of FreeNAS if you desire just to see if it will install.
Good Luck
After fiddling around with the UEFI again, and have to chose it from the Boot Menu, it works. I can't have it Thumb drive as the first boot option, it locks up, but from the Boot Menu, it works. I have not idea what the problem with it the last time I tried legacy BIOS mode, but I did get it to work finally.
Thanks for the help, I guess. I still wish I knew what I did to get it to work. Now it Boots and I still have to configure it.
Things I did notice.
UEFI is set for UEFI boot but Legacy Boot from the Thumb drive boots it.
I can't get it to boot if I set the Thumb drive as the first option in the boot order, it locks up
If I chose it from the Boot Menu, I get it to work in Legacy mode, even though the BIOS isn't set for Legacy Bios booting.
In the boot menu, it has TWO Sandisk options UEFI and Legacy for it. I can't tell which setting for the Sandisk is getting it to boot. I did install Frenas as Legacy Bios.
Windows 10 boot with UEFI but Frenas boots with Legacy even though I don't have to change anything in the UEFI to get both to boot.