ASRock B650M Pro RS WiFi: DRAM light and slow first boot

Allow the documented first boot to finish

The combined manual gives example first-boot times after a CMOS clear: about 90 seconds for 2 × 16 GB, 150 seconds for 2 × 32 GB, 170 seconds for 4 × 16 GB and 315 seconds for 4 × 32 GB. These are examples for the documented configurations, not universal timeouts for every firmware and kit.

Repeatedly cutting power every few seconds prevents a meaningful observation. Record whether the indicator blinks, stays solid or progresses to another stage, and what changed before this boot.

Check the memory arrangement

Follow the manual's recommended one- or two-module installation diagram. A matched supported kit is a clearer starting point than mixing separate sticks. These are DDR5 boards; DDR4 is incompatible.

Adding modules, enabling a memory profile and clearing firmware settings are different situations from a failure with an unchanged working configuration.

If startup does not progress

After allowing the relevant documented training time, power down and disconnect mains before reseating memory. Test one supported module in the recommended position, then the other, keeping notes.

If a newly enabled profile triggered the issue, return to default memory settings. Follow the manual's recovery procedure if BIOS is inaccessible. Check the exact CPU, memory support list and BIOS version.

Do not interrupt a firmware update or clear CMOS while it runs. Prepare encryption recovery information before firmware changes.

Confirm a stable result

Once startup succeeds, check the reported memory capacity, ordinary restarts and normal use before enabling optional memory overclocking again. A faster second boot does not prove that every profile is stable.

If a minimal compatible configuration stays stuck, provide the board, BIOS, CPU, full kit number, module positions and observed LED sequence to support. Those details are more useful than describing every first-boot delay as a dead motherboard.