PC Freezing (But only for a few seconds)

I find this a little hard to explain but my PC will freeze (stutter?) for around 3-4 seconds and then go back to normal, this seems to happen maybe once an hour down to every 20 minutes, it can vary greatly, this is playing games or even just browsing the internet.

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When this happens, the sound also goes all crazy for just a few seconds. My PC is newly built , around a month ago but this problem has only been occurring for around 10 days or so.

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Since it happens so infrequently I'm not sure how to monitor it and see what is causing it.

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Edit: Forgot to mention when this happens, I can hear almost like a clicking sound coming from somewhere inside my PC case.