Power Supply Pop on switch on

[Billzz]

Hi all,

After shutting down Windows I always flick the switch off on the power supply, so that the computer is completely 'off'.

In the last week or so, every time I turn the computer on by the back switch there is a loud 'pop' sound that seems to come from the computer/PS. I then turn on the computer by the case power button and all seems well.

Everything seems to be working normally, I was just wondering what might be causing this popping sound? Should I be concerned? Could it be a sign that the power supply could be failing?

I have a Corsair TX 650W which is about a year old ... any ideas?

Cheers for any replies

 

[Billzz]

Thanks for the replies. Just to be clear it also happens if I just plug it straight into the wall too - as maj also states. The reason I turn it off at the PSU itself is that I have an iMac attached to the same power block and most of the time the PC is off as I only use it for gaming.

Not really a big deal, just wondered if it was anything much to be concerned about.