Check if the G5400 supports the B250 platform and ensure proper BIOS settings.
You can try modifying the system to work with your B250 and G5400 setup, though compatibility depends on specific components and configurations.
确实需要关闭插槽并修改BIOS。你必须具备读取中文和可能的俄语的能力，我想这是这些指南所写的原因。