Since this morning my 2018 MacBook Pro has been stuck in a boot loop. When I start it up, I hear the chime (sometimes I see the apple logo) and this repeats.
SMC and NVRAM reset didnt help. I can't start my MacBook in Verbose mode and can't start the Apple hardware test. I can start my system in Recovery mode but as soon as it finished downloading it will get stuck in the loop again. I also tried to boot macOS from a stick but as soon as I select the stick as boot device, it gets stuck in the loop again.
I dont know what to do now. Does anyone haven any ideas how to proceed?