Google bot says:Steps to Fix Gigabyte B550 1-Long/3-Short Beeps Reseat the GPU: Unplug the computer, remove the graphics card, check the PCIe slot for dust, and firmly reseat it. Check GPU Power Cables: Ensure the power cables (6+2 pin) from the PSU are securely plugged into the GPU and the PSU itself. Move PCIe Slot: Try moving the GPU to the second, lower PCIe x16 slot, if available. Clear CMOS: Clear the CMOS to reset BIOS to default settings. Check RAM: Although it is usually a GPU error, try reseating the RAM or testing with one stick, as memory issues can sometimes trigger this. Check Connections: Make sure the monitor cable is plugged into the GPU, not the motherboard (if using a CPU without an iGPU, like a 5600X/5800X).