Don't just copy-paste your ISO files. Use a dedicated tool, check your partition scheme (MBR vs GPT), and you’ll save yourself a very long night.
If you are only creating a Windows 10/11 drive, Microsoft’s official tool is the most reliable. boot usb format
This was my 2:00 AM roadblock.
It took four minutes.
I plugged the USB back into the stubborn server. I hit the power button. The fans whirred to life. The screen flickered. Don't just copy-paste your ISO files