First off this is alt coin. question I asked mods to move it.
I will try to answer it. give me 10 min
g4560 from intel are pentium or celeron
i 9900k is high end 9th gen mobo supports high end 9th gen cpu correct?
https://www.asus.com/us/Motherboards/B250-MINING-EXPERT/HelpDesk_CPU/Pentium on the list
G4560(3.5G,54W,L3:3M,2C,rev.B0,HT)
Pentium G4560T(2.9G,35W,L3:3M,2C,rev.S0,HT)
but the list does not mention i9 9900k
now you say the i 9900k is in a asus rig maximus x hero correct.
the g4560 is not supported by that mobo. the i9 9900k is
https://www.asus.com/us/Motherboards/ROG-MAXIMUS-X-HERO/HelpDesk_CPU/so what can be wrong all 3 cpus are bad.
both the b250 and the h110 is bad.
or ram is bad. so what ram are you trying with the 2 mobos?
the asrock says both the g4560 and the g4400 should work.
https://www.asrock.com/mb/Intel/H110%20Pro%20BTC+/index.asp#CPUI am capable of testing the cpu's for you in motherboards I have as I have multiple motherboards I know work with g4400's
But you opened new cpu's from new packages correct?