Unlikely to be the cause of a booting problem. Put flash in your PC and let it checkdisk. Make sure you are booting from a USB2 port.
After trying each of these, get us diagnostics if you can. Go to Tools - Diagnostics and attach the complete diagnostics zip file to your NEXT post.
If you can boot then if you still have problems, use your flash backup if it is current, might help some things. You can prepare flash as a new install and just copy the config folder from your backup.
If you still have problems, you can edit config/docker.cfg on flash to disable dockers, edit config/domains.cfg on flash to disable VMs, edit config/disk.cfg to disable autostart on the array. Then reboot in SAFE mode.