pc

Corsair PSU Electrical Buzzing Noise Under Load

Power Supply Coil Whine

This article demonstrates one type of electrical buzzing noise (coil whine)  that computer power supplies can generate under load. In this case, the unwanted noise comes from a Corsair HX100i Platinum PSU – a supposed premium product and chosen for a  silent PC build because of its Zero RPM fan mode and its promised quiet and efficient operation.

Power Supply Units (PSUs) should not sound like this. This one was sent back for an exchange and the replacement was good.


During general desktop use, the power supply was silent.  When required to fulfill demanding power requirements though, the PSU started to make a buzzing sound  like sparks jumping the gap of a Van de Graaff generator and in some instances, like chirping crickets.

It was difficult to determine the power supply as the source of these noises when it was in  situ within the PC case. Noise from cooling fans and spinning hard disk drives can make the noisy culprit difficult to determine by putting your ear inside the computer case. The only way I could make a determination was to remove the power supply from the case and place a demanding load on the PSU. This made it much easier to identify the noise source.

I used the Furmark GPU stress test to make the power demand.

This video demonstrates the electrical buzzing noise from the Corsair HX1000i power supply when put under load and how the noise stops when that demand is removed.

As per Corsair’s recommendations for curing noisy PSUs, all power saving options were disabled on the motherboard and in Windows prior to recording.


  • 02 seconds  : mouse click to start the Furmark GPU stress test. Straight away, the unwanted PSU buzzing noise can be heard.
  • 12 seconds : this is the noise from the GPU fan. However, the electrical noise from the Corsair PSU can still be heard.
  • 24 seconds : mouse click to end the Furmark GPU stress test. The PSU noise and the GPU fan both stop.
  • 29 seconds : the Furmark GPU stress test is repeated and the Corsair power supply noise can heard after the mouse click.
  • 48 seconds : Corsair power supply details shown during the Furmark GPU stress test. Power draw 187W in and 172W out.
  • 59 seconds: Furmark GPU stress test ends and PSU noise stops.

Unable to Open Gentle.config Root Element is Missing – MediaPortal Error

Unable to Open Gentle.config Root Element is Missing – MediaPortal Error

Cannot connect to TV Server  – MediaPortal

This error is produced when exiting the MediaPortal Configuration program. The file

c:\ProgramData\Team MediaPortal\MediaPortal\Gentle.config

is corrupt and MediaPortal cannot write to it to save your configuration settings.

MediaPortal Configuration Error

Unable to open Gentle.config Root element is missing

The corrupt file also causes a problem in MediaPortal itself, where MediaPortal cannot connect to the TV Server even though the TV Server name is correct. This will prevent access to the EPG and your recordings, even though the TV Server is running normally and capable of making recordings.

However, testing that same connection in MediaPortal Configuration will report success.

MediaPortal Configuration | Test TVServer Connection

MediaPortal Configuration | Test TV Server Connection

MediaPortal error logs will also report:

Gentle.config could not load because no XML root node was found

The solution is to replace the Gentle.config file with a working one from another MediaPortal installation you may have in your home. If you don’t have one, download the Gentle.config file from here. Right click the link and select Save Link As… Gentle.config

The file is approximately 6Kb in size, so will download quickly. Overwrite the corrupt file by copying the new file to:

c:\ProgramData\Team MediaPortal\MediaPortal\Gentle.config

Launch the MediaPortal Configuration program to adjust your settings and then close it. The error will no longer appear and your settings will have been saved. The MediaPortal to TV Server connection problem  will have been resolved too.

File corruption can be caused by a number of circumstances, normally associated with system crashes, hibernation failures and the Blue Screen of Death.

I get them a lot.