Let me start this off with something i am sure is said a lot here, I am fairly new to unraid. recently i tried it out on an old laptop with a bunch of hard drives on USB drives and got the feel for it and seen it would do for me. i then ordered hardware i needed and did the most fun part of all projects and built the system. 
Asrock z690 pg riptide, 12gen i5, 64gb ram (non ecc), an old 1080ti, 2 2tb m.2, a bunch of random old hdds, 

so i moved the drives to the tower (knowing i would likely have to rebuild the config) 
so you now have the back story for context
now onto the issue at hand and what i have done so far
so i booted the system for the first time and checked the bios for the recommended settings and confirmed they were set (most were already) and i then set the usb as first boot. great now i save and reboot and get the unraid boot menu and move past it. it then gets to the "Verifying bzfirmware checksum" then "bzfirmware checksum error" 

i did turn secure boot off and have tried several other bios settings on and off in several other configs to try to resolve this i have removed all drives and left only the 2 m.2 ssd. i have flashed the USB with a fresh copy. i have tried a totally brand new Samsung 120gb USB over the several 16gb Sandisk usb's i had around the lab. i was using to begin with. I have also just for S&G's installed truenas scale on it to see if i could get anything (not windows and NAS related) on it and i was able to get that going but due to truenas sucking for a lot of reasons as of me completing this post i have for the moment gotten truenas scale to work on the system but i do not want it as i prefer unraid. any ideas on what to try to get it working the way i want to would be very grateful.  

 

 

 

 

****RESOLVED****

 

for me the resolution was the ram that i was using in the system, to test this i tried to boot the system and then powered it off changed the ram stick with another known working one (the one that was in the system was known working but just cheap) and then tried to boot again. and the system booted. hope this helps someone in the future..

Edited March 9, 20242 yr by firejeep

1 hour ago, firejeep said:

bzfirmware checksum error

https://docs.unraid.net/unraid-os/manual/troubleshooting/#bzimage-checksum-errorfailure-reading-flash-drive

6 minutes ago, trurl said:

https://docs.unraid.net/unraid-os/manual/troubleshooting/#bzimage-checksum-errorfailure-reading-flash-drive

thank you for sending that i somehow missed that but did get the same information in my hunting before making this post. i did neglect to mention that i do have a backup, and i did get the latest zip and copy the mentioned files. i do have new ram coming in tomorrow to install in the system as the ram that is in it is only 8gb that i removed from the current system i am typing on until the new ram comes in, it is possible that could be am issue by tomorrow the entire system will be a new system except for the drives but since the time they were on the laptop they have been wiped and all partitions removed.  even with the drives from the laptop removed and only the new nvme drives connected and a new out of the box new USB with a clean new flash of unraid on it i got the error so at this point the only thing i can think is that the ram from my current computer is causing an issue as the current computer is an ibuypower from best but and the stick that i am using is the oem one from it. (im guessing the cheapest they could find hence why i upgraded to 64gb from the 8)