XMP profile stopped working that has been working for months

[cried22]

I have a 9900k on a z390 Gigabyte board. My 3200mhz of DDR4 has run great on its XMP profile for this board and the z170 before it. However, after I unpluged the pc today, it will not boot with the xmp profile on.

 

It will boot with a manual oc up to 2600mhz, but no more, even with increased voltage.=

 

I have tried clearing CMOS, updating bios, and trying individual ram sticks. Should I replace the motherboard or cpu first? Is this a bad cpu memory controler?

[cried22]

Thanks I'll try that. I also just ordered another 9900k to test if that is the issue. Do you think it's more likely to be the board or the 9900k?

[cried22]

1 hour ago, alatron978 said:

When ever z390 gigabyte boards lose power from the PSU (being unplugged or psu turned off) it will retrain memory. This is what is happening in your case. I have a z390 aorus pro and the board sucks for memory oc and has many issues related to memory. Since clearing CMOS would usually fix this it is weird that it didn't in your case. I recommend re seating the sticks, raising VCCio and VCCsa voltages to 1.25V, rtt's (bottom of memory tab) to 40 40 120 120 60 60, setting everything manually and not using xmp, if not of these work and you still have the z170 system available for you to use, test if the sticks can run XMP on it.

These steps didn't work but thanks for the advice. Should I try a new 9900k or motherboard first?

[cried22]

Thanks

[Falkentyne]

It would help if you told us what exact Z390 GB motherboard you have.

 

There is a 90% chance your board switched to the backup BIOS and the backup BIOS is a different version than the main BIOS, which may be older and not compatible with your RAM.  Did you ever update the BIOS before?  Do you remember what version you updated?  (you can just look where you downloaded it).  Is the BIOS you currently boot to the same version as that?

 

Switching Bioses on the Aorus master and Extreme is far different than on the lower tier boards.  So please tell us what board you have.

[cried22]

32 minutes ago, Falkentyne said:

It would help if you told us what exact Z390 GB motherboard you have.

 

There is a 90% chance your board switched to the backup BIOS and the backup BIOS is a different version than the main BIOS, which may be older and not compatible with your RAM.  Did you ever update the BIOS before?  Do you remember what version you updated?  (you can just look where you downloaded it).  Is the BIOS you currently boot to the same version as that?

 

Switching Bioses on the Aorus master and Extreme is far different than on the lower tier boards.  So please tell us what board you have.

Thanks for the reply! It is a z390 Aorus elite. It has the latest bios installed.

[Falkentyne]

Did you check the BIOS version you are on compared to what you were on before?
if it switched to the backup BIOS and its on an older version, you can try upgrading it to the current version, although there are bugs in the newest version.

 

But to make it switch back to the main bios, is quite hard.

Usually its recommended that you boot to the BIOS, then power off the AC power supply switch (or unplug) while in the BIOS.  
Then hold down the reset button and case power on button, and keep it held down while powering on, until it powers off again.

This usually makes it switch BIOS versions.

 

[cried22]

Oh ok so I should try to make it go back you mean? Ok. Thanks!

[cried22]

2 hours ago, Falkentyne said:

It would help if you told us what exact Z390 GB motherboard you have.

 

There is a 90% chance your board switched to the backup BIOS and the backup BIOS is a different version than the main BIOS, which may be older and not compatible with your RAM.  Did you ever update the BIOS before?  Do you remember what version you updated?  (you can just look where you downloaded it).  Is the BIOS you currently boot to the same version as that?

 

Switching Bioses on the Aorus master and Extreme is far different than on the lower tier boards.  So please tell us what board you have.

Tried 3 different bios versions. That's not the issue. Thanks though.