A little research got me to a “systemrescue” iso and that one worked fine. The live environment fired up and I was able to save all my data by mounting the partition via terminal into /mnt/mountfolder/.
Nice. I always keep an ISO of systemrescue on a bootable USB for these occasions, it’s gotten me out of jams in both Windows and Linux situations.
Not sure what to make of your issue with Ubuntu stopping from working, including the live boot, only for it to work again for you in the end. My hunch is wonky hardware but can’t really say.





You already tested with a standard Windows 10/11 install ISO? Put that on a bootable USB along with your exe but instead of installing you go into the recovery options and should see a way to get to the cmd prompt where you can test run that .exe. It might have the same results as Windows PE but it’s worth a try and downloading the Windows ISO is free anyway.
Worst case if you have a spare HDD/SSD you can put that into your system, temporarily install Windows 10/11 onto it (I don’t think you even need to worry about activation), run your .exe, then shutdown and swap your drives back to your normal setup and be done with it.
But yeah I get what you’re saying, ideally there’s a better way but I’m not too sure what else to suggest within Linux itself.