Issues Restarting With XMP on

[u/DangerousRiver4503]

My issue is, when I restart my computer from either windows or linux, it hangs and the dram led turns on, on my motherboard. From this state I either have to hold the power button to get it to shut down, or sometimes I have to fully switch off the psu to get it to turn off before I boot it back up. If I just shut down the pc, it shuts down and will boot back up fine. This issue only occurs when using the restart function. The issue revolves itself when I turn off a-xmp in my bios. This issue started randomly a few months ago. My system is completely stable except for this. I'm on the latest bios version and have tried most of the common fixes (adjusting voltages, messing with the memory training settings, ect.), but the only thing I've tried that fixes the issue is turning off a-xmp.

Please help, I'm so tired of this. I don't want to turn off xmp because I have a non-x3d ryzen cpu, so it benefits considerably from the better speeds.

My build is:

CPU: Ryzen 7700x

Mobo: MSI pro X670-p wifi

Ram: 2x16gb corsair vengeance ddr5 rated for 5600MT/s in the xmp profile.

GPU: RX 7900XTX

Storage: mix of NVMEs and HDDs

Running with PBO curve optimizer at -30 and the ram brought up to 6400 MT/s at 1.35 volts (up from 1.25). Note, the issue still happens with both PBO off, and the ram running at the stock 5600 MT/s (tested for an extended period). The issue only stops when a-xmp is off in the BIOS and thus the ram runs at 4800 MT/s. Again, the system is completely stable with PBO on and the ram at 6400MT/s aside from the issue restarting.

Let me know if more info would be helpful.

[u/cakemates]

system restarted is one of the main symptoms of an unstable system, isnt -30 too much? is that 6400 at 1:1? that is also very hard to reach unless your are in second gear but second gear 8000 performs worse than first gear 6000.

I suspect your overclocks are very unstable and they are telling you that much.

Here is my suggestion, disable all overclocks, set all to stock by clearing cmos, then overclock only the ram and test it; OCCT, ycruncher and memtest should do the trick. Be aware that overclocking the cpu can destabilize the ram and then you have to do the testing all over again.

[u/DangerousRiver4503 → u/cakemates]

Thanks for the reply, but I clearly stated in the post that I throughly tested the machine with no overclocks just the stock 5600MT/s xmp enabled and I still have the restart issue. But, I have throughly stress tested the system via multiple hours of benchmark tests on the cpu, gpu, and ram to make sure my overclocks are stable. Not to mention actually playing games on the system. Also the ram is at the default timings in the 5600MT/s xmp profile, I just upped it to 6400 MT/s at 1.35v.

[u/DangerousRiver4503 → u/DangerousRiver4503]

And to clarify the system is not restarting on its own. The issue is when I hit the restart button in windows/linux.

[u/SomeEngineer999]

The ram is potentially capable of 5600 if everything is perfect. XMP is overclocking, and nothing is guaranteed.

[u/DangerousRiver4503 → u/SomeEngineer999]

I guess, but why is the system stable in all other respects?

[u/SomeEngineer999 → u/DangerousRiver4503]

It may not be, it may just be that you're not noticing or are writing off glitches as being something else. Regardless, your motherboard is sensing that something is not right, and protecting you from it. Yes, the motherboard will be the most sensitive thing, and it may actually be fine pushing it a bit beyond what it thinks is safe, but it will err on the side of caution.

[u/Shadimarbc]

This looks like a memory training issue if the PC isn't having an issue once in Windows with the overclocked ram. Check for Memory Context Restore and Power Down Mode in BIOS. Test with both enabled. Test with both disabled.

Check for any Fast-Boot in the BIOS options and disable it.

Update the BIOS if not using the newest stable version. Some version are betas. So latest could be either stable or beta. BIOS updates can contain memory training fixes and functions.