DDR4_4 and DDR4_3 lead to system failure during startup.
DDR4_4 and DDR4_3 lead to system failure during startup.
Recently, I bought new RAM (previously I had DDR4_1-2 filled). All the RAM is the same model, G.Skill 2x4 F4-3200C16D-8GVKB, and each one works independently. However, when I install the sticks into slots 3 and 4 the system refuses to boot. It turns on, but the CPU and case fans run, yet there’s no video output because it doesn’t boot. I’m sure the issue isn’t with the RAM. My question is: Can I fix this without replacing the motherboard (Gigabyte B450M DS3H WIFI)?
This motherboard has slots 1-2 and 3-4 available. If it doesn't work, you should reach out to Gigabyte for a replacement.
I might consider reinstalling the CPU, but I’ll hold off until I read more opinions. And honestly, I don’t have any extra CPUs or motherboards to try out.
Then although @Benji might suggest it's theoretically possible, in real life it seems highly unlikely. Today memory controllers are built into the CPU, but a faulty one would be unusual. Generally, CPUs are very reliable components. The most I've encountered with memory controllers was during the AMD FX era, where using multiple RAM sticks and overclocking required overvolting the controller—something not commonly done anymore. My last thoughts would be trying compressed air to clear debris from those slots, or if that fails, consider returning the motherboard for a replacement.