Cloudray 50W Cannot Find Laser

I have a cloudray 50W that I’ve been successfully using Lightburn on a Dell laptop.

I recently purchased another laptop to be a dedicated machine to run the laser. I’m unable to “find my laser” upon setup on the new Dell machine.

I have done the following:
Update driver from the lightburn files
Update driver from the EZCad2 files form Usb stick
Reinstalled Lightburn - Hit the EzCad2 driver selection
Restart Computer

In device manager
The BJJCZ Device - Laser Mark Control Board V4

Not sure what else to try? I’m able to connect back to the original laptop but I’m unable to get the new one to work.

The Lightburn software uses different drivers than EZCad does…

Might want to add your laser is a fiber. Cloud Ray has a few 50W lasers…


Sorry - It is a Fiber laser as suggested.
I followed the video but I’m not able to get EzCad to work as well on the new laptop. Upon opening Ezcad I get a “Failed to Open IMC Driver”

Under the device manager, there is an error present.

I’m getting this error:

Windows cannot verify the digital signature for the drivers required for this device. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source. (Code 52)

Sorry, I am not a windows person, and it’s clearly a device driver issue… I also know nothing about EZCad except it takes different drivers…

Maybe @Rick could assist…

Good luck


LightBurn and EZCad 2 use different drivers. There is no way to get it to where you can use both without doing a driver swap. It’s easy to do, and outlined here in the install docs though:


I followed the instructions with Zadig, issue resolved! Happily running Lightburn on the new computer.


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