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Thread: ASUS X99 Motherboard Series - Official Support Thread (North American users only) Reply to Thread
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  Topic Review (Newest First)
03-04-2019 02:11 PM
ThrashZone Hi,
I have in the past lost 1 out of 4 sticks running 4x4gbs of corsair dominator 2666C15
Not sure why I just figured it was dual channel memory
3200C14 4x8gb working now not using xmp though just manual dialing it in

Maybe do a memtest86++ on the ram
Or just run it at default 2133 for a while to see if the boot mayham goes away or 1 stick drops off :/

I'm on 3801 bios also for at least the last month or so from 2101
03-03-2019 09:00 PM
TK421
Quote: Originally Posted by Jpmboy View Post
just "LOad OPtimized Defaults" in bios, F10 to save and restart

I'm still on all stock settings after the load optimized default, I think using Q-fan tuning and setting a fan speed curve might be the culprit behind the random failed startups.



Any reason to why the fan might be the problem?
03-03-2019 08:51 PM
TK421
Quote: Originally Posted by Jpmboy View Post
just "LOad OPtimized Defaults" in bios, F10 to save and restart

I made changes one by one to see where the problem is. Will report back when I finish going through them all.
03-03-2019 07:54 PM
TK421
Quote: Originally Posted by Jpmboy View Post
just "LOad OPtimized Defaults" in bios, F10 to save and restart
Okay
03-03-2019 07:30 PM
Jpmboy just "LOad OPtimized Defaults" in bios, F10 to save and restart
03-03-2019 07:07 PM
TK421
Quote: Originally Posted by Jpmboy View Post
and this occurs when running default settings (after a clrcmos)? If no, then it is the OC settings. If yes, anything from the PSU on down the wire could be failing.

I'm not sure which one is CLR CMOS button, maybe that's on the X99 Rampage but on X99 Deluxe / Deluxe U3.1 (not Deluxe II) the button is MemOK! near the front memory slots.





Settings used was OC'd, it's been stable for over 2 years but just having these problems earlier last year (when installed with W10 1809 LSTC enterprise).


Memory stock or XMP 2400MHz have problem.


LLC 7, optimized power phase, SVID disabled.
Adaptive with minus (-) voltage 0.001v, and additional turbo voltage / target voltage 1.24v.
BT and Wifi disabled.
Asmedia SATA/USB controller disabled.

Pure UEFI with no CSM or secure boot.





I can try with every clock/voltage/LLC/power phase setting stock, will report back in a bit.
03-03-2019 06:47 PM
Jpmboy and this occurs when running default settings (after a clrcmos)? If no, then it is the OC settings. If yes, anything from the PSU on down the wire could be failing.
03-03-2019 06:10 PM
TK421
Quote: Originally Posted by Jpmboy View Post
did you run sfc on the boot drive?
open a admini cmnd prompt and type: sfc /scannow
if it reports any unfixed errors post back...



SFC /scannow didn't find anything.


After updating bios, and using exact same setting w/ VCCIN 1.9 and Vcore 1.24v, sometimes the system will still randomly fail to boot.




Additional oddities I found.


- Fail to POST then shutdown, no image on screen.
- Using memOK didn't fix the OS booting issue (memory on stock), though it did fix the "no image on screen" issue above
- XMP or Normal setting don't fix the issue
- One time the detected memory stick is only 3 out of 4 stick installed (all seated properly, dunno what could cause this)






I read one report that a connected PS4 controller was preventing boot of ASUS X99 MB, tried disconnecting my PS4 controller but that didn't solve the issue: https://rog.asus.com/forum/showthrea...e-quot-B1-quot






After enough tries I can get into OS, eventually.




Wonder what might be wrong with my setup? Failing mem, failing CPU, or motherboard?








I should also mention that I have the ASUS Fan extension card plugged in and driving 1 Gentle Typhoon AP15 in DC mode (turbo speed) and 3 temp probes connected (Case intake, case ambient, CPU exhaust temp).








I also tried CHKDSK, though due to the system unable to have have consistent successful boot, CHKDSK cannot be run (since it asks me to check disk on next restart).








I should also mention that I installed a RTX 2080 Ti XC Ultra recently. Checked that it's seated properly and power cables "click" in place.


Boot drive is a 960 Pro 512GB installed on the vertical M.2 slot in the front of motherboard.








Tomorrow I can dust the PC off, not sure if it'll fix the issue though.


I'm not sure what to do at this point.
03-03-2019 05:45 PM
Jpmboy did you run sfc on the boot drive?
open a admini cmnd prompt and type: sfc /scannow
if it reports any unfixed errors post back...
03-03-2019 04:33 PM
TK421
Quote: Originally Posted by ThrashZone View Post
Hi,
All voltages look pretty reasonable except input looks way more than should be needed
Your at 1.95v where as 1.9v would probably be more than enough maybe that is allowing lower vcore voltage to a point ?



I adjust the VCCIN to 1.9v as your recommendation.


I also put the Vcore to 1.24v, with the same 4.2GHz setting.


The boot problem persists


I notice there's a new version bios 3902, I think my motherboard is still on 38xx something. I will try to update and see if I can resolve the issues.
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