Question No display/ DRAM light not going away

[mutilatedchickenugget]

I've recently upgraded my pc switching from an intel core i7-7700k to a ryzen 5 5600 and a gtx 1050ti to a rx 6600. As title says after switching motherboard DRAM light stays on and wont go away and i get no display. I've reseated cpu, tested it with different ram, cleared CMOS, switched channels, taken out and put back in gpu. The pc spins to life with the fans going off then i get no display and the DRAM light is there. I didn't buy the motherboard as i got it from a friend who was previously running a ryzen 5 1600 on it. Any ideas?
Motherboard: ROG STRIX B350-F GAMING ( i updated BIOS to support the 5600.)
GPU: MSI Radeon Rx 6600 MECH
CPU: Ryzen 5 5600
RAM: Corsair Dominator Platinum 32gig 3000mhz
PSU: Seasonic X 750w
WIFI card: EDUP pcie WIFI 6

Edit: Now gpu fans dont spin and one case fan doesnt spin
Edit 2: fans work again

 

[eazen]

The CPU could be DOA. If the mainboard worked before, it’s the CPU. I hope your bios flashing was done correctly though.

 

[mutilatedchickenugget]

The CPU could be DOA. If the mainboard worked before, it’s the CPU. I hope your bios flashing was done correctly though.

The motherboard was working after flashing BIOS. Is it possible for the cpu to brick the whole motherboard? Because I've switched out to the original cpu that was confirmed working and it did same thing.