Audio Distortion when doing certain tasks.

I built this PC 3 months ago and I have had this problem since then, I had a PC before that this one and I think I had the same problem on that one.

While doing certain tasks and I heard it once while browsing folders, I will get very distorted audio. This video Win7 distorted noise - YouTube (Not mine) you can hear at the 2:12 mark a very noticeable audio distortion, thats the exact distortion I have. I only get it while doing specific things such as installing Directx (Only rarely happens), I can get it to happen 95% the time when I try to uninstall Java and the window pops up saying "are you sure?".

Now I first thought this may be the RAM I have installed (2 Sticks of XMS 4GB, one is 1333mhz & one is 1600mhz, both of them run at 1333mhz). I took out the 1333mhz one and I still get the audio distortion so mismatched RAM isn't the problem.

I am going to try uninstalling Realtek audio drivers and install them again using the motherboard disk to see if that may fix it.

If anyone has a idea why this is happening please post, it's very appreciated.

Edit: This may have fixed it: I uninstalled the realtek audio drivers and restarted the PC, upon going through the same process of uninstalling Java I noticed the very small slowdown when it was loading the uninstaller but didn't get the audio distortion that went with it. I am going to keep it as it is and if I don't get any more distortion I will close the topic.

Edit2: Upon restarting again and leaving it to idle for 10 minutes to allow all programs to startup. I started the uninstall for Java and it took at least 1 minute for the admin window to appear (Took 5-7 seconds before) and just before it appeared the video and audio froze for half a second. I think that one of the ram modules is faulty. But still if anyone else has any suggestions please reply.

Unless you must have Java, there is no need to install it. I uninstalled Java almost a year ago and have never had a need for it. There have been several issues with Java security.

Audie is on a shared IRQ (Interrupt) with a higher priority device and that can also cause some sound problems, but not usually distortion - that is usually interruptions/dropouts in sound.

What do you have for Power Supply?

A power supply could cause problems. Sadly, the only way to really test a power supply is to replace it with a known good one.