Windows 11错误0xc0000221求助：双DDR5内存无法启动单条正常

Hey there, let's troubleshoot this 0xc0000221 error you're facing with your dual RAM setup. First, let's recap your scenario to make sure I'm aligned:

• You just built your first PC with an ASRock B650 Pro RS motherboard
• Running two G.Skill Trident Z5 6000MHz DDR5 sticks, following the motherboard's recommendation to use slots 2 and 4
• When using both sticks, you get the recovery error pointing to \windows\system32\ntoskrnl.exe
• Single stick in slot 2 works perfectly, but adding the second stick back breaks boot
• You haven't enabled XMP/EXPO or updated the BIOS yet

Let's walk through some actionable steps to fix this: #

• Check physical contact first
  Pull both RAM sticks out, use a clean eraser to gently rub the gold contacts (avoid touching the memory chips), then reinsert them firmly into slots 2 and 4—make sure you hear the plastic clips click into place. Sometimes new RAM can have slightly poor contact that's unnoticeable with a single stick but causes issues when dual-channel is enabled.

• Swap the RAM sticks between slots
  Move the stick from slot 2 to slot 4, and the one from slot 4 to slot 2. If the system boots with this swap, it might mean one stick has a compatibility quirk with the original slot. If it still errors out, the issue is likely not isolated to a single stick-slot pair.

• Verify BIOS memory settings
  Boot into UEFI (press Esc as prompted) and check the default memory frequency—B650 boards usually default to JEDEC-standard 4800MHz for DDR5. Ensure the system is detecting this correctly, no weird overclocking or misconfigured timings. You can also try using ASRock's Memory Try It! feature to select a stable, lower-frequency profile (like 4800MHz) and save the settings before rebooting with dual sticks.

• Update your motherboard BIOS
  Even though you haven't done this yet, early BIOS versions for B650 chipsets often have compatibility gaps with newer DDR5 memory models. Boot with the working single stick, download the latest BIOS for your B650 Pro RS, and use the built-in Instant Flash tool to update it. Many dual RAM issues are resolved with a simple BIOS update.

• Test individual RAM sticks in both slots
  Boot with each stick alone in slot 2, then slot 4. If one stick fails to boot in slot 4, that stick might be defective. If both work fine individually in both slots, the issue is likely a dual-channel compatibility conflict—you can reach out to G.Skill or ASRock for their verified memory compatibility lists to see if your specific RAM model has known quirks with the B650 Pro RS.

A quick note on the error code: 0xc0000221 typically signals kernel file corruption or hardware issues, but since your single-stick setup works perfectly, we can rule out system file damage. This points almost exclusively to RAM compatibility, contact, or BIOS-related issues.

备注：内容来源于stack exchange，提问作者AndiiCodes