Asus anti-surge was triggered to protect system from unstable power supply (NEW PC)

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NeoZie

Commendable
Apr 13, 2017
6
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1,510
Hi.

I bought a new pc about 2 months ago with components that i chose myself, the company I bought the pc from built my pc, which means that my components are still under warranty.
My pc works amazingly fast and I'm satisfied.

However about a month ago I saw that my pc wasn't working properly when i got home, I saw a black screen that said "Power Supply surges detected during the previous power on, ASUS Anti-Surge was triggered to protect system from unstable power supply unit, Press F1 to Run Setup."
I didn't understand what the problem was and when i pressed F1 It turned me into the BIOs, Since I don't know how to use the BIOs I clicked "Save And Exit", then my pc restarted normally and worked as fast as always, I didn't see any difference in the pc performance so I kept using the pc and forgot about this problem.

Today while i was just watching a youtube video my pc randomly restarted, I thought there was a power outage but my monitor was still working so i understood that my pc was the problem, about 5 seconds later my pc restarted and i saw the same black screen saying the exact same thing:
"Power Supply surges detected during the previous power on, ASUS Anti-Surge was triggered to protect system from unstable power supply unit, Press F1 to Run Setup."

So again, I clicked "Save and Exit", my pc restarted and is now working properly,
But I wonder what is causing the problem.
Many people say that the Asus Anti-Surge system is 99% unnessesary because it usually gives false alarms, and they suggest disabling it.
I do want to disable it but I'm still not sure if there's a problem with my PSU, if theres a problem with my PSU, Why is my PC still working properly after these alerts?
Should I disable Asus Anti-Surge or not?

My PC Specs:
Intel core i7-6700k 4.0 GHz Processor
HyperX Fury DDR3 16 GB 1866MHz Ram
Gigabyte GTX 1060 6GB Graphics card
Asus H170-Plus D3 Motherboard
Antec 650W VP650P Power Supply
Western Digital Caviar Blue WD10EZEX 1TB Sata III
Samsung EVO 750 120gb SSD
 
Solution
T
If you want to know what's causing it, the first place I'd look at is the power quality in your area. Surge protection mechanisms have somewhat peculiar behavior.

Many of them are based on the MOV. When these components absorb a surge, they take some damage. The damage changes the MOV to respond to smaller surges in the future, and eventually, the threshold drops below the power line voltage. At that point, the MOV is either removed from the circuit by some other mechanism, or it catches fire.

If your PSU has surge protection built in, and many do, then the most likely way for a surge to trigger AAS is if the MOV in the PSU has worn out. This only happens if there are frequent surges in your area. The most common cause for these is...
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DRagor

DRagor

Polypheme
Jan 23, 2017
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If you want mu opinion, it is better to have one extra level of (unnecessary) protection, then to need it and not have it. In short, you don't know if symptoms you described are just AAS overreacting, or it is really your PSU sometimes not delivering power within limits. If former, you are free to turn off AAS system. But if you do that and the latter is true, failing PSU can damage your system in future.
Decision is up to you, as well as the risk. Let me only add that your PSU is medium quality.
 
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the nerd 389

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Nov 20, 2012
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That PSU may not have adequate surge protection. If that's the case, the surge can pass through the PSU and reach the motherboard. In most cases, that would damage the machine, as most motherboards don't have surge protection.

Consider yourself lucky that your board has it, and get a surge protector. You may also want to invest in a better PSU, as you may not have the best power quality in your area. The surge protector will wear out over time, and the better PSU will give you an added later if protection when the surge protector stops working.

If you don't do anything, repeated surges will wear down the motherboards protection, and eventually take out the motherboard and/or other components.
 
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NeoZie

Commendable
Apr 13, 2017
6
0
1,510

Thanks for the answer, I'll try to get a surge protector to see if it fixes the problem.

Any other answers?
 
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NeoZie

Commendable
Apr 13, 2017
6
0
1,510

I'm not going to turn AAS system until i'll be sure its unnecessary for me, I posted this thread because I wanted to ask what is causing the problem, I do not see a solution coming from you TBH.
 
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T

the nerd 389

Honorable
Nov 20, 2012
1,573
5
12,460
If you want to know what's causing it, the first place I'd look at is the power quality in your area. Surge protection mechanisms have somewhat peculiar behavior.

Many of them are based on the MOV. When these components absorb a surge, they take some damage. The damage changes the MOV to respond to smaller surges in the future, and eventually, the threshold drops below the power line voltage. At that point, the MOV is either removed from the circuit by some other mechanism, or it catches fire.

If your PSU has surge protection built in, and many do, then the most likely way for a surge to trigger AAS is if the MOV in the PSU has worn out. This only happens if there are frequent surges in your area. The most common cause for these is because you have a relatively high power electric motor on the same circuit, and each time it shuts off, it will increase the line voltage to surge levels (this is normally on the order of a millisecond at most).

You may want to see if your air conditioner or heater are on the same circuit, as that's the most likely culprit. Other potential surge sources include vacuum cleaners, some shop tools, and space heaters in that order.
 
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