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That's a windows splash screen, not a splash screen when booting a Linuxcnc install disk.

Download this program and install, after reading the whole page.
win32diskimager.org/

When you insert the USB stick you want to make a Linuxcnc bootdisk don't let windows do anything if it cant read your USB stick, windows does not be able to read the USB stick.

Run the Program you just installed.
Select the image, the image you have confirmed the md5sum is good, if not download it again and check again. I'm not a windows user so you'll have to search how to check the md5sum under windows. Also select your USB drive, do not select a hard disk.

Write the image to the USB stick.

If windows complains about not being able to read the disk DO NOTHING. Everything is ok.

Reboot the computer and select USB boot. If you are going to install make sure you have enough space on your disk or have an unused disk available for Linuxcnc.

I recommend this tool as all it does is copy form the image file to the usb stick byte for byte. It doesn't try to be fancy, it does exactly what is required to create a bootable USB Stick from the image.

I got past that. It attempts to boot from USB drive but this is as far as it goes.  See attachment. 
 

Okay. I am using Rufus but it does not like the ISO. The complaint is "the ISO you have selected contains a UEFI bootloader that has bween revoked. and that will produce a "Security Violation" screen. Rufus suggests a more up to date ISO. linuxCNC 2.9.4 is not current enough?

Can you post your config files?

You should have mentioned that, could save me several minutes of typing !
You are welcomed, always.

Long story short, a lot of things were changed before I replaced the the 7i97t. Since then, I have have been cutting with zero issues. The thcad for arc volts is reading accurately while cutting. The thcad for ohmic is not hooked up. I can't get it to work, but maybe that's a good thing because it sounds like it's a bad idea with hf start.

The longer story is that this machine didn't have a home. So while its new home was being built, I set it up temporarily in my shop, so I could attempt to retrofit it with linuxcnc. When I fired up the torch for the first time, it damaged the 7i97t. This was with both ohmic and arc volts hooked up, so its anybodys guess what caused it. I added some grounds and an emi filter and few other things then replaced the 7i97t. Then I got it working great with a non hf plasma(except I didn't hook up ohmic).
Then after it was moved into its new home, we added several ground rods and hooked it up to the hf start plasma the way you had just advised. It's been cutting great. 

I know I ask a lot stupid questions but I do appreciate the help. 

Its an Ethernet card, i got the motors to spin as though it were a milling machine, but SCARA isn't an option. The default it has is XYZ, XYZA and XZ lathe, none of those options are what i need. I followed a few guides that said how to change the kinematics but so far, following those guides, I've had no luck. I was hoping that might be able to helps me out with either more direct communication or by providing a working example.

If there was a "known problem" it would have been fixed pretty quick.
The guys that build the ISO test them, they aren't just built and thrown out into the wild, things just don't work that way.
Usually in these kind of issues the first port of call should be to check the download as tommy suggests, rather than just assume it's a problem with the way the ISO has been built.

Is there any reason you cant boot from a USB drive ?

It helps to burn the DVD at 1X speed, if at all possible, as it lowers the write errors.
I would also check the manufacturing date on the DVD box, fully enclosed they can be OK for 5 to 20 years depending on moisture in environment, hermetically sealed even more.
Did you check the MD5SUM or SHA256 for the download? It can also be a bad download due to interruptions or drops in connection.

It comes down to what pinout you need.

What is the 7I92T connected to?

That is, what breakout board are you using?


 

I burned the 2.9.4 ISO to a DVD.  Because my DVDROM drive went bad recently, I bought a replacement.  Amazingly, I found an exact match for my Dell Optiplex 960.  It plugged right in, passed diagnostics and successfully booted from DVD.  I went a burned it again.  Same problem.  Is there a known problem with the release ISO, or does Windows 11 ISO burn just not work?

I downloaded the archive for mesa 7i92t cards from the official website, but there are so many different firmware versions that I don't understand which folder I need to copy.

The thing is, I don't know how to do it))
This is my first time doing this, and I'm already panicking because I've been trying to figure it out for over a month))) Now I've decided to ask people for help!))
My LinuxCNC doesn't have any firmware for Mesa 7i92TH at all.

mesaflash 3.5.16 is the latest

If you want 4 stepgens and 4 encoders, what pinout do you want?

(If for a 7I85S you would use 7i92t_7i85sx2d.bin = config fir 7I85S with 4 stepgens, 4 encoders, 1 sserial port per connector)

Moved to "GmoccaPy" section.