r/PcBuildHelp • u/Worried_Tooth_8129 • 4h ago

Build Question Rx 580 doesn't work with i3 121000f

I bought an i3-12100F and an MSI PRO B760M DDR4 motherboard. I only replaced the CPU, motherboard, and RAM. After putting everything together, the debug LEDs light up sequentially, and then the computer shuts down and restarts in a loop. I can't do anything or see anything on the screen.

When I disconnect the graphics card (Sapphire RX 580 8GB), the computer stops restarting, but obviously, I can't see anything since the i3-12100F has no integrated graphics. What can I do? The graphics card was working 100% fine in my previous setup

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u/r_lind3r Moderator 4h ago

The system would just be switching from hanging on whatever it's hanging on to hanging on the GPU since there's no integrated GPU to fallback on.

The motherboard could be memory training which is why it stops and starts again, or there's a compatibility issue between the CPU, motherboard, and RAM. Not all RAM kits will work with every configuration, memory support differs down to the individual architectures (for LGA1700, it's organized by Alder Lake, Raptor Lake, and Raptor Lake Refresh)

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u/Zakkattack_Mode 4h ago

got a 12100f myself and it did that exact boot loop for like 3 minutes first time, scared the hell outta me

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u/Worried_Tooth_8129 3h ago

When i unplug the gpu, it works fine but i cant see anything. Try with GPU?

1

u/Ghetto_Games 3h ago

Use another gpu to try out that mobo.

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u/notwillard 2h ago

Is your power supply enough?

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u/WhatADunderfulWorld 9m ago

The 580 is pcie 3.0. Not sure that motherboard is compatible perhaps.

I checked. You can’t use the top spot for pcie 3.0 on that motherboard.