Miner is finding 5 cards so you are few steps further than most users that have problem with boot. I see you already start playing with over clocking options and changed power stage to 0! :
- powerstage - lower value = lower wattage, 7 is max power,
0 is minimum power but it will almost for sure freeze your rig.Try lowering until it becomes unstable, but be around rig to reboot it if it will freeze

. 4-6 are optimal values
You also started claymore 8.1 that is not happy with your custom OC settings...
Delete this rig add it again don't change anything beside choosing miner and try it again.
What kind of PSU you have because setup like this will take 950-1100W from the wall without modifications, my 5 cards rigs are drawing 1050W and I`m using two 750W PSU for each rig.