Intermittent POSTing in Safe Mode- Asus Prime H270m Plus

Tirtha_2

Prominent
Jun 26, 2017
2
0
510
It's been a month since I have assembled my new Build:
i3 7100 with Stock Fan
H270m Plus
Corsair Vengeance LPX DDR4 8GB 2400 MHz
WD Blue 1TB HDD
Antec VP 450P PSU
Antec GX 200 Blue
Logitech Blue Tooth Mouse and Keyboard MK 345.
No additional Graphics Card so far ( which I intend to buy shortly)
Windows 10 Home 64 bit.

Intermittently ( 3 times so far), I am facing the issue where during a start up the PC is POSTed into Safe Mode with the following message " The System has POSTed in safe mode. This may be due to the previous POST attempt failing due to System instability, or if the Power Button was held in to force the system off. If the system failed to POST after you made changes to UEFI settings, you may wish to revert to stable settings to prevent POST failure. Press F1 to run SETUP".
So each time I have seen this error I just press F1 to enter UEFI setup and simply Exit and the Computer boots up normally.
This error has not specifically occurred after I have done any specific changes to UEFI.
Observation ( only one so far):
I have set the XMP to be enabled and each time this error has come, I see the RAM has gone to 2300 MHz ( which I believe is the Fail Safe setting) and after I have entered the UEFI and just exited ( with out doing any further change), RAM resumes to 2400 MHz.

The PC otherwise is running fine with out any other issue.
Any suggestions and advice on how to debug this error is appreciable.
 
Solution


Yes, this is exactly what you should do as first step. If that does not solve problem, I would try another PSU as next move.
It could be a problem with RAM (might need upping voltage a bit to run stable at 2400 - however if that was the case you most likely suffer some other symptoms)
Could be a motherboard issue.
Could be also PSU problem with voltages at cold start.
However since it happens so rarely (once per week?), debugging the issue is rather out of question.
 
Thanks. I do agree it's tough to de-bug as this issue can not be reproduced easily. For the time being I have decided to run the BIOS with de-fault settings ( Particularly with XMP disabled) and observe further. Any other suggestions is welcome.
 


Yes, this is exactly what you should do as first step. If that does not solve problem, I would try another PSU as next move.
 
Solution