14.5v on 12v rail

Hawkthalas

Honorable
Oct 11, 2012
4
0
10,510
Hello guys, hope you can help me to figure what is happening.

I have a p9x79 pro with a gtx1060 and a cooler master 850w silver, all have been working correctly until the last week, when a high voltage warning appear when using my windows partition, and as a warning message that there is a power surge when booting the computer.

I checked the bios (4701), and effectively the 12v rail was giving 14.56v, so i ended buying a cool master 850w gold. But after installing it, it gave the same warning, both in bios and with the asus software when using windows.

I read that this may be a bios fault, but i havent touched the bios in months, also all the configuration is explicit done for not overclocking.

Of course is possible that i have a really bad luck and bought a psu with the same problem...

Does someone have experimented or saw something like that?

What can be the problem?

The MOBO can be the problem? the bios ? the cmos ? memory modules ?

Thank you in advance for your time.

 
Solution
The BIOS reads what the sensor on the motherboard provides. Start by resetting the BIOS to the default values and then check if the voltage still is incorrect in the BIOS. Using a DVM would be best since you wouldn't rely on software and sensors.
The BIOS reads what the sensor on the motherboard provides. Start by resetting the BIOS to the default values and then check if the voltage still is incorrect in the BIOS. Using a DVM would be best since you wouldn't rely on software and sensors.
 
Solution

Hawkthalas

Honorable
Oct 11, 2012
4
0
10,510
Thanks GhislainG for your fast answer.

Update of the situation:

I resetted the BIOS, and measured voltages of the PSU, in the end seems that my old CM 850 silver was fine and the new CM 850 gold have problems.

After that i took my whole computer to the store where i bought the new PSU... we tried with different new PSUs and all have this strange voltage behavior. I left my cpu and my mobo since we doesnt knew if any of them have been broken with the weird voltages, memories and gfx card were fine.

After a week i returned to the shop and found that my mobo was working wrong, seems that the broken PSU take it with him, they gave me a new mobo and a new functional psu 850w gold, the technician told me that the whole lot of PSU was broken and they returned them to their provider.

So all is good now.