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Please make sure to have latest bios installed and latest chipset drivers for the board.
Probably, you may try to disable these settings in the BIOS.
Go to Boot Menu
Boot to Removable Devices Disable
Boot to Network Disable
USB Boot Disable
Boot USB Device First Disable
USB Mass Storage Auto
Let us know how it goes.
Since the issue was related to the USB, and the USB is a component which is on the motherboard, the bios and chipset driver would be the one that could have a hotfix for any known issues..
All the best,