I'm trying to configure WTware 5.8.26 on a few machines, booting via USB to copy the files to local storage.
My problem is that in all 3 machines the same error occurs, the computer sees the USB on the BIOS and on the one-time-boot screen, but as soon as it tries to boot to the USB stick, all that appears on the screen in a constantly blinking "-" and the USB stick gets quite hot, apparently trying to make something happen, but failing.
All machines have different configs with quite old hardware in them, I'm trying to reuse them as terminals to log in a RDP server.
Machine 1 has an Athlon II X2 processor, machine 2 has an Core I3-2120, and machine 3 has an Core I3-540, all of them are equipped with 4GBs of RAM and a functioning HDD with more than enough space for WTware (250GB or more). These machines were being used with Windows 8.1 Pro or Windows 10 Pro until very recently, with no complaints, so I know that even though it's very old hardware, it works 100%.
I'm using a Windows 10 Pro notebook to create the bootable USB, I tried reformatting the USB stick to no avail, tried running WTware Center with compatibility mode to Windows 8 (which was the operating system of the previous machine that I used WTware Center on without hiccups) and that also didn't work.
The USB stick itself is an 8GBs USB 2.0 SanDisk Cruzer Blade, formatted with FAT32.
I'm quite new to WTware, and so far I'm liking it a lot, so any help is appreciated

P.S.: sorry for any grammar or spelling mistakes, English isn't my first language.