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MB: ASUS ROG Maximus Z790 Hero (WiFi 6E)
CPU: Intel Core i7-13700KF
Mem: F5-6400J3239G32GX2-TZ5RK
Purchased and built system in May 2023. No CPU OC, just XMP on the memory. PC has run fantastic with no issues until today. Turned it on and it would not post. After holding the power button to power off and then restarting, PC would post into BIOS safe mode. I did see a BIOS upgrade on ASUS site and updated the BIOS to 1402. Did not resolve the problem, but since the update did reset all of my settings (removing the XMP) it booted up normally. I have determined that without XMP it acts normally but with XMP it will not post. Ran memtest on the memory (at base speed, not xmp) for several hours and no errors. System seems completely stable with no XMP enabled. No crashing even under load. Before I blame memory, any thoughts on troubleshooting further in case its system board or possibly CPU?
Edited to say, I did not have to tweak any voltage or timings when I built the system in May and literally have had no issues. I have made no changes to the system or system settings. I'm in IT so unlike my customers, I promise you I did not make any changes, really!
Thanks,
Erik
**Edit 2** Followed some of the suggestions made in the forum and found that if I boot on a single DRAM module, then there is one module that will boot fine at 6400 and the other absolutely wont even post at 4400. So looks like I found the culprit, one DIMM is bad. Was able to replicate multiple times, so feel pretty confident.
CPU: Intel Core i7-13700KF
Mem: F5-6400J3239G32GX2-TZ5RK
Purchased and built system in May 2023. No CPU OC, just XMP on the memory. PC has run fantastic with no issues until today. Turned it on and it would not post. After holding the power button to power off and then restarting, PC would post into BIOS safe mode. I did see a BIOS upgrade on ASUS site and updated the BIOS to 1402. Did not resolve the problem, but since the update did reset all of my settings (removing the XMP) it booted up normally. I have determined that without XMP it acts normally but with XMP it will not post. Ran memtest on the memory (at base speed, not xmp) for several hours and no errors. System seems completely stable with no XMP enabled. No crashing even under load. Before I blame memory, any thoughts on troubleshooting further in case its system board or possibly CPU?
Edited to say, I did not have to tweak any voltage or timings when I built the system in May and literally have had no issues. I have made no changes to the system or system settings. I'm in IT so unlike my customers, I promise you I did not make any changes, really!
Thanks,
Erik
**Edit 2** Followed some of the suggestions made in the forum and found that if I boot on a single DRAM module, then there is one module that will boot fine at 6400 and the other absolutely wont even post at 4400. So looks like I found the culprit, one DIMM is bad. Was able to replicate multiple times, so feel pretty confident.
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