Question PC restarts at 110 volts when running my application, but works fine at 220 volts ?

[KarlMartin]

I have a custom-built PC that runs a custom application involving moderate to high CPU usage. When powered with 110V AC, the system restarts automatically a few minutes after launching the application. However, when connected to a 220V AC supply, the same application runs smoothly without any crashes or reboots.

System Specs:

Processor: i7 processor 9th gen

Motherboard: GA-IMB310TN(REV 1.0)

Power Adapter: 65W power

OS: Windows 10 pro

Observations:

System powers on and idles fine at both 110V and 220V.

The reboot only occurs under load when running my application at 110V.

No BSOD, just a sudden restart (as if power was cut briefly).

Nothing useful in Event Viewer — no crash logs, just a clean boot event.

No thermal issues — temperatures are normal and monitored live.

What I've Tried:

Running in High Performance power mode.

Updating BIOS and all drivers.

Monitoring voltage, temperature, and CPU load — all seem normal before the reboot.

Confirmed the issue only happens at 110V and never at 220V.

Changed all components like similar processor, ram, ssd, power supply but not motherboard.

Any insights would be really appreciated. Thanks!

 

[COLGeek]

When you swapped power supplies, were they the same make/model?

This appears to be power supply related when under a load. Maybe a power supply with more wattage would help.

 

[Ralston18]

And I will add the suggestion to take a look in Reliability History/Monitor.

Event Viewer is a good tool.

However Reliability History/Monitor presents a timeline format that may reveal some pattern.

Some error code, warning, or even an informational event that appears when 110 volts is used but not when 220 volts is used.

 

[TerryLaze]

When you swapped power supplies, were they the same make/model?

This appears to be power supply related when under a load. Maybe a power supply with more wattage would help.

Unless they live in a country that supplies both 110v and 220v out of the wall my guess would be that whatever they use to convert 220 to 110 can't handle the full load.

Power Adapter: 65W power

The full system will very easily use more than 65W so if this is what your converter is rated for then that's your problem here.

 

[KarlMartin]

When you swapped power supplies, were they the same make/model?

This appears to be power supply related when under a load. Maybe a power supply with more wattage would help.

yes, I have tried with same company's adapter and also with different company's adapter but still issue persist

 

[COLGeek]

Are you using some sort of step down transformer to provide 110v?

 

[KarlMartin]

Are you using some sort of step down transformer to provide 110v?

no, I get 110V from the plug, in US.

 

[TerryLaze]

no, I get 110V from the plug, in US.

yes, I have tried with same company's adapter and also with different company's adapter but still issue persist

What are these adapters you talk about?!
Can you take a picture and upload (to imgurl or any other site you might know)
Did you bring your system over from europe or some other 220v country?

Also since I think you are not native english speaker, explain your problem as detailed as possible in your own language and use translate to turn it into english.
You need to tell people more info about your problem.

Google Translate

Google's service, offered free of charge, instantly translates words, phrases, and web pages between English and over 100 other languages.

translate.google.com

 

[KarlMartin]

What are these adapters you talk about?!
Can you take a picture and upload (to imgurl or any other site you might know)
Did you bring your system over from europe or some other 220v country?

Also since I think you are not native english speaker, explain your problem as detailed as possible in your own language and use translate to turn it into english.
You need to tell people more info about your problem.

Google Translate

Google's service, offered free of charge, instantly translates words, phrases, and web pages between English and over 100 other languages.

translate.google.com

You can view the images here:

https://flic.kr/p/2rcQSgh

View: https://flic.kr/p/2rcQSgh
.
I use my PC in multiple countries. In Asia, where the power supply is 220V, everything works fine with no issues. However, when I use the same setup in the US, where the power supply is 110V, the problem occurs.

 

[SkyNetRising]

When powered with 110V AC, the system restarts automatically a few minutes after launching the application.
However, when connected to a 220V AC supply, the same application runs smoothly without any crashes or reboots.

Processor: i7 processor 9th gen
Power Adapter: 65W power

What model i7 processor 9th gen ?

i7-9700 -65w​

i7-9700k -95w​

i7-9700t -35w​

Also you're have to account for power used by other components:

motherboard,​

ram,​

storage device​

discrete graphics card(if present).​

For time being you can turn off turbo boost in BIOS.
But ultimately you need a higher power capable power adapter - 150W minimum.