[SOLVED] PC will not boot when XMP profile is selected

[SilverbackPrime]

I'll start off with system specs

• Motherboard: Gigabyte Z390 Aorus Master
• CPU: Intel Core i7 9700K (BX80684179700K)
• RAM: 8GBx4 Patriot Viper Steel DDR4 4400 (PVS416G440C9K)

I built this PC in March of 2020, and it's been functioning fine to this point, I assume on the default RAM speeds the entire time.

When I go into the BIOS and select either of the XMP profiles, the PC will no longer POST, and gets in a infinite restart loop until I kill the power, after which the XMP profile is disabled and the PC starts up and runs on default speeds with no issue.

I ensured at time of purchase on the Gigabyte website the RAM speed compatibility, and it supports the DDR4 4400 speed. I have also ensured I'm on the latest BIOS version (f11n).

I assume that I'm doing something incorrectly, because even when I input the RAM settings manually, it fails to POST.

Thanks in advance for the assistance, and I'm happy to provide any additional information requested.

 

[kanewolf]

I'll start off with system specs

• Motherboard: Gigabyte Z390 Aorus Master
• CPU: Intel Core i7 9700K (BX80684179700K)
• RAM: 8GBx4 Patriot Viper Steel DDR4 4400 (PVS416G440C9K)

I built this PC in March of 2020, and it's been functioning fine to this point, I assume on the default RAM speeds the entire time.

When I go into the BIOS and select either of the XMP profiles, the PC will no longer POST, and gets in a infinite restart loop until I kill the power, after which the XMP profile is disabled and the PC starts up and runs on default speeds with no issue.

I ensured at time of purchase on the Gigabyte website the RAM speed compatibility, and it supports the DDR4 4400 speed. I have also ensured I'm on the latest BIOS version (f11n).

I assume that I'm doing something incorrectly, because even when I input the RAM settings manually, it fails to POST.

Thanks in advance for the assistance, and I'm happy to provide any additional information requested.

Based on the part number you listed above, you have two sets of two matched DIMMs. There is no guarantee that they will function at XMP with 4 DIMMs.
You could try tweaking the voltage up a tiny amount to see if you can get them to function.

 

[SilverbackPrime]

Based on the part number you listed above, you have two sets of two matched DIMMs. There is no guarantee that they will function at XMP with 4 DIMMs.
You could try tweaking the voltage up a tiny amount to see if you can get them to function.

I was afraid when I got two packages of 2x8gb instead of 1 package of 4x8gb that I might run into problems, but I suppose it's too late now, and I'll have to work with what I've got.

I tried upping the voltage, first to 1.46v, then 1.47v, then 1.48v, but it still refused to POST.

I yanked out 2 of the DIMMs and made sure the two remaining were in the right slots and the matched pair, then tried both the 4400 and 4266 XMP profiles, but instead of just not POSTing, I got BSODs of various flavors every time I restarted until I turned off XMP...

I ran a full 4 passes of Memtest86 with all 4 DIMMs installed, and returned no errors, so that would indicate that the RAM itself is fine, and that the issue is elsewhere?

 

[kanewolf]

I was afraid when I got two packages of 2x8gb instead of 1 package of 4x8gb that I might run into problems, but I suppose it's too late now, and I'll have to work with what I've got.

I tried upping the voltage, first to 1.46v, then 1.47v, then 1.48v, but it still refused to POST.

I yanked out 2 of the DIMMs and made sure the two remaining were in the right slots and the matched pair, then tried both the 4400 and 4266 XMP profiles, but instead of just not POSTing, I got BSODs of various flavors every time I restarted until I turned off XMP...

I ran a full 4 passes of Memtest86 with all 4 DIMMs installed, and returned no errors, so that would indicate that the RAM itself is fine, and that the issue is elsewhere?

You are at the extreme of memory clocking with 4000+ That is definitely not my area of expertise. You might look at the other possible JDEC profiles in the memory DIMMs to see if there is a 3600 profile you could manually set.