TUF B550M-Plus DRAM illumination
TUF B550M-Plus DRAM illumination
Inspect the motherboard for any harm, bent connectors on headers or connectors similar to the clear CMOS jumper. Verify if a pin detached from the CPU and became lodged in the slot. Check for bent pins on the CPU itself. Test the CPU in another system to confirm stability.
The B550M-PLUS motherboard manual mentions A2 and B2 for dual channel with two sticks, but the setup varies by system. You can find more details here: https://dlcdnets.asus.com/pub/ASUS/mb/So...?model=TUF GAMING B550M-PLUS Section 1.4 on page 19 (1-9). It suggests starting with one stick per slot to avoid missing a memory channel. If possible, test the CPU on another motherboard. For friends using AM4 systems, try installing your CPU there first—if it works, you can then test with your RAM. I saw someone in a discussion flashing the wrong BIOS on their board; double-check that your model is B550 M-Plus, not B550 Plus. The BIOS for the B550 M-Plus is available at: https://www.asus.com/motherboards-compon...B550M-PLUS. Honestly, it seems your board might be damaged, especially since another CPU didn’t boot. Can you recall which part of the CPU had a bent pin? A photo would be very helpful. If the BIOS is correct, your CPU and RAM should fit another system—then you might need to return it for repair.
I checked using five different sticks in the B2 slot, and some without B2 at all. The same results appeared. This is the M version of the motherboard when switching from ATX to mATX. The bent pin was one of the corner ones, near the end of that corner. I plan to borrow a B550 board tomorrow for testing. Thanks for all the advice!