I am facing the same issue:
After booting from USB it say loaded 100%
then slowly tries again from 0 to 100% and then just stucks nothing happens.
I am using MacBook Air (macOS Monterey 12.0.1, 8GB RAM, 1.6 GHz Dual Core Intel Core i5)
Now I am trying with rhrexboot-2020-08.iso hopefully it will work and remains valid for the exam, fingers crossed.
Finally I was able to run & PASS the compatibility test for exam on rhrexboot-2020-08.iso on my MacBook Air (macOS Monterey 12.0.1, 8GB RAM, 1.6 GHz Dual Core Intel Core i5).
Few things to note:
I had to use external keyboard, mouse and speakers as somehow MacBook keyboard mouse, keypad and speakers did not work at all. I had to buy USB-C hub to connect all (USB flash drive, Keyboard, mouse, Logitech C270 camera, Plantronics headset.)
I must say rhrexboot-2020-08.iso is also not straight forward. I had to boot multiple times to see "..." (three dots on blank screen which eventally loads exam in 2-3 mins).
I hope this rhrexboot-2020-08.iso remains valid for the exam too, I am planing to appear for exam in next ~20 days.
Also I wish Red Hat would take some action for the issues people are facing in the the latest iso (rhrexboot.iso).
I have issue on my Dell Inspiron 16 Plus (7610) , On my Lap Screen flickering and not able to see or do anything once booted up from ISO.
@manoj7shekhawat I tried that as well.. But older ISO not coming up with Graphics, I tried disabling Secure boot to see.. that also failed..
Suspecting issue with Graphics Driver.
May one line correction in driver or module can fix the issue..
@R& T and @@Dev Team ca Work and fix this I believe