Question PC not Booting from Bootable USB

[hello1231332]

Mobo: X570 Aorus Master
BIOS Version: F39d
CPU: Ryzen 9 3900x
RAM: Corsair RGB 16 x4 3200mhz DDR4

Hello, I want to install a fresh pair of Windows 11 on my PC, I used Rufus to make the bootable drive, (and formatted as GPT, UEFI, and NFTS) but when I plug the bootable USB in my motherboard, and after changing BIOS boot to the USB, my PC is booting from my SSD, where I had windows 11 installed. I disabled secure and fast boot, is there anything else I can do?
Thanks

 

[SkyNetRising]

when I plug the bootable USB in my motherboard, and after changing BIOS boot to the USB, my PC is booting from my SSD
I disabled secure and fast boot, is there anything else I can do?

Can you show screenshot from BIOS boot priority settings?
(uppload to imgur.com and post link)

 

[hello1231332]

Can you show screenshot from BIOS boot priority settings?
(uppload to imgur.com and post link)

https://imgur.com/a/ZkD4ks9

View: https://imgur.com/a/ZkD4ks9

 

[SkyNetRising]

Try enabling CSM.
With CSM enabled, secure boot will be disabled.
You want secure boot off.

 

[hello1231332]

Try enabling CSM.
With CSM enabled, secure boot will be disabled.
You want secure boot off.

I turned off secure boot because it might not allow to the pc to boot from the usb, I thought CSM is for legacy computers

 

[MJS WARLORD]

When i did a windows re-install i read somewhere that if you hold down shift key and tap F8 whilst doing the restart you come up with different start up options , when you find the correct menu change to boot from usb and when finished dont forget to change it back , i did it and it worked , my pc is custom built so i dont know if it will work on any pc.