I am using z790 apex motherboard with 13900k cpu, 2x16gb ddr5 g.skill 6400mhz ram, msi 4090 siprim x gpu, seasonic 1200w psu, wd black sn850nvme as main drive in m.1 slot and 2 samsung 970 pro 2 (2tb) drives in dimm.2 module and all has been working fine until i updated to 1203 bios, i havent used pc much lately but my pc keeps freezing randomly with no keyboard or mouse control and no error code on debug led, i have tested with various hardware combinations and finally found that installing the dimm.2 module with 2 drives is the culprit but it has been working fine prior to bios update, i am not sure i can roll back the bios but i just wanted to find out before i do that if there is fix for this from the DEVS, thank you.
Not sure why the DIMM.2 would induce crashing on one UEFI build but not another and haven't seen any reports of this behaviour. I have the Z790 Apex here with two drives installed and no issues. The most likely reason would be overclocking stability.
1. Have you run any memory stress tests with the DIMM.2 installed?
2. Have you disabled XMP or any overclocking and tested to see if the behaviour continues?
3. If wanting to revert back to an older build, use USB Flashback using a FAT32 formatted USB pen drive. Before running the USB BIOS Flashback tool, rename the BIOS file (MZ790A.CAP) using BIOSRenamer
No overclock, everything at stock, xmp 1 profile since day 1 of building this PC several months ago and has been working fine, have run memtest86 from within bios 3 times for at least 4 hours each. I look in event manager and there is no indication of anything that is causing this freezing except entries when I had to hard reboot PC. I am totally lost and I might have to fresh install windows but it's way too time consuming. I wanted to run driver verifier that is within windows at boot but have had trouble with it in the past.
No, PC has been running fine from day 1 at xmp 1 which was 6400mhz and never had issue, running memtest for several hours also did not cause any issues, I am not really sure now what the issue as I got a bsod while PC trying to shutdown and bsod came right before PSU turned off and it said something driver and I did not catch it.
Neither have I but my system doesn’t crash like yours. If it did, troubleshooting 101 is to remove overclocking. Not all instability is caught by loading the memory bus.
Finally got the minidump and it said intelppm.sys and pci.sys caused bsod, but they are not related to my system freezing as timestamps don't match.
bit the bullett and re-installed win 11 and all is well so far except in event viewer i have a ton of the following errorsl
: The embedded controller (EC) did not respond within the specified timeout period. This may indicate that there is an error in the EC hardware or firmware or that the BIOS is accessing the EC incorrectly. You should check with your computer manufacturer for an upgraded BIOS. In some situations, this error may cause the computer to function incorrectly.