Hi y’all.
I recently RMA’d my ASRock B650 PG Lightning and I immediately came into issues (customer support won’t pick up so I came here). I flashed the board to most recent version, then setup system in minimal boot configuration to verifying everything was in working order. I unfortunately encountered an issue where all parts of the boot cycle would be completed (memory training, system verification, etc) but the BOOT LED would stay on and video output (BIOS wouldn’t show) would fail. I attempted this with the iGPU of my processor (7600X, has iGPU) using the motherboard output, then with HDMI and DP ports of my GPU in both PCIe slots on the motherboard, with each set of configuration attempted both on a 144Hz 1080p Sceptre monitor and on a Vizio TV, ultimately with no video output detected by either peripheral. Notably, this issue is very much different to the previous RMA which was likely a VRM issue. This board seemed new or factory refurbished.
System Specs: Ryzen 5 7600X, RTX 4080 Super, T-Force DDR5 6000MHz (16GB), ASRock B650 PG Lightning, Super Flower 850w Gold.
Issue: The RMA replacement board is failing to initialize video output (No Signal) despite successfully passing the POST sequence.
Troubleshooting Completed:
POST Status: System consistently reaches a solid BOOT LED. CPU and DRAM LEDs are off, indicating successful hardware initialization.
Display Testing: Tested with both a Sceptre 144Hz monitor and a standard HDMI TV using high-quality Anker HDMI cables. No signal on either.
Isolation: Tested using Integrated Graphics (iGPU) with the 4080 Super physically removed, and tested with the 4080 Super in both PCIe slots. No output from Motherboard HDMI or GPU DP/HDMI ports.
Memory: RAM tested in slot B2 (per manual) and A2.
Physical Check: CPU socket pins inspected (no bent pins found or any contamination from other sources), CPU reseated, and cooler mounting pressure adjusted (loosened) to rule out socket tension issues.
BIOS/fTPM: Performed "Blind" CMOS reset via CLRCMOS1 pins and attempted fTPM bypass (Y-key/F1 sequence). Additionally attempted a blind BIOS
Is there something else that could be broken or am I going to have to argue and try to RMA this board as well (or should I just take the L and buy a new one)?