"You can short two adjacent VDD pins safely." Truth: Never short any non-ground pins. Even two VDD pins may have different decoupling capacitors—shorting can cause oscillation or VRM damage.
Move RAM stick to a different channel slot to see if the system boots in single-channel mode. PCIe Data Lane Pin
The AM4 pinout diagram reveals two independent memory channels. Each channel has 64 data pins plus control/address pins. am4 pinout diagram
Transfer the actual data bits back and forth between the CPU and the memory modules.
Connect the CPU directly to the primary graphics card slot (x16) and the primary M.2 NVMe SSD slot (x4). "You can short two adjacent VDD pins safely
The AM4 platform provides up to 24 PCIe lanes directly from the CPU (Gen 3 or Gen 4, depending on the processor generation):
Deliver clean, high-amperage electrical current directly to the CPU cores. PCIe Data Lane Pin The AM4 pinout diagram
Dedicated pins for Dual Channel DDR4 memory, including channels A and B, address pins, data lines (Data ), and differential data strobes (DQS).
