my switch sometimes like that..
i just restarted my switch on ofw.. then
when on ofw put the RCM Jig while switch still on.. then hold power dont click power off just click Restart then hold Volume + and dont hold power then plug the cable now.
on windows 10 doesnt work then i use nxloader it ok. if it stay on black screen.. unplug the cable again then plug it again. until switch load the payload correctly
I am having the same problem with OP.
I don't have any random issue on my 2 switch consoles at all.
I just purchased another switch console 2 days ago and I failed to send any payload to it.
Using the same PC with my other 2 consoles, both of them works fine but not this newly purchase switch.
this and that other guy just don't know what they are doing. I got a new switch a week ago on 4.1 and it was fine. these guys are just idiots.
I know exactly what I am doing, I can boot up another 2 older consoles just fine.
Can you check on the back of your nintendo switch for year and model ?
Mine are:
2018 HAC-S-JXE-C3 = does not work
2016 HAC-S-JP/EU-C0 = works fine
2017 HAC-S-JP/EU-C1 = works fine
Thanks.