What do the EZ Debug LEDs indicate on the B550 Tomahawk?
The four EZ Debug LEDs indicate specific hardware failure or detection issues during boot. CPU indicates the CPU is not detected or has failed, DRAM indicates memory is not detected or has failed, VGA indicates a GPU/PCIe/M.2 device is not detected or has failed, and BOOT indicates the booting device is not detected or has failed. (Page 28)
From the official Tomahawk B550 Tomahawk Msi Mag Gaming Motherboard User Guide manual, page 28
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