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Q code 15

Superhoops81
Level 8

Hey guys wondering if someone could please help me with a new build

Asus B650E-E
Ryzen 9
Corsair 6000 MHz 32 x 2
Rx 6700 Asus

Getting error Q code 15 on the motherboard (pre memory system agent initialisation is started) have tried all memory configurations can someone please advise is this motherboard issue or CPU I'm lost 🤔

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2 ACCEPTED SOLUTIONS

Accepted Solutions

Nate152
Moderator

Hello Superhoops81

Try this....

Shut down your pc and turn the psu switch off.

Install your ram in slots A2-B2 (2nd and 4th slots from the cpu).

Press and hold the clear cmos button for 3 seconds.

Try booting up your pc.

 

 

 

 

View solution in original post

No worries. It's a common misconception and even experienced users fall into the same trap. For future reference, it's important to remember that this is why memory vendors sell kits as a matched set. They do not test for sufficient voltage guardband or account for users combining or mixing with more memory.

13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090

View solution in original post

9 REPLIES 9

Nate152
Moderator

Hello Superhoops81

Try this....

Shut down your pc and turn the psu switch off.

Install your ram in slots A2-B2 (2nd and 4th slots from the cpu).

Press and hold the clear cmos button for 3 seconds.

Try booting up your pc.

 

 

 

 

Hi Nate152
 
Sorry for the late response, just wanted to say thanks for the help, managed to get it working in the end, did what you suggest and also updated the Bois to the newest version seems to have sorted the issue 
 
Thanks again 👍
 

Nate152
Moderator

You're welcome,

Great to hear it's working.

Be sure to set D.O.C.P. or set your ram manually to get it up to 6000MHz.

 

 

 

 

Superhoops81
Level 8

Hi need some more help, have installed more ram another 32 x 2 taking it to 120 overkill I know but getting the same issue have cleared the CMOS and tried to flash the Bois like last time but not sure if it's updating correctly the light stays on nothing seems to be working what's the latest Bois version? what I mean is that would it overwrite the same version or would it need a new or older one on the usb ? 

Hi Superhoops.

Combining and mixing memory kits isn't supported by memory or motherboard vendors. This is because memory vendors bin and validate the memory kit in the density in which it is sold. If you combine memory kits the settings in which the kit is validated for XMP/EXPO are no longer valid.

13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090

Hi apologies for not explaining the added memory is exactly the same as previously installed?? 

As above, combining memory kits is not supported. The kits are validated and binned by the vendors in the density in which they are sold. That means adding more modules to the system is not supported. You need to purchase a single kit validated in the density in which you wish to run.

13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090

Superhoops81
Level 8

Really? Awe man since when Iv been out the loop way to long listen thanks for your help I really appreciate it I never would have figured to that out 

No worries. It's a common misconception and even experienced users fall into the same trap. For future reference, it's important to remember that this is why memory vendors sell kits as a matched set. They do not test for sufficient voltage guardband or account for users combining or mixing with more memory.

13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090