Your recording sounds a lot like EMI leaking through the audio ports. To take from another similar post:
-=ZeroHour=-:
Right click My Computer>Manage
In the left menu click on Device Manager
Maximize (+ button) Sound, video and game controllers
Right click all Audio associated items and click update driver. You may need to insert the driver disk for your sound card (or motherboard if your using integrated audio)
If that doesn't work, visit the website of your video card (or motherboard if using integrated audio) manufacturer. Navigate to "downloads" then "drivers" and find your product, then download the new drivers. Keep in mind you'll have to uninstall your old drivers before you can install the new ones. You can uninstall old drivers through aforementioned Device Manager.
Hope you solve your problem, and good luck!
-Mavirick
-=ZeroHour=-:
But first you can try updating your sound card drivers.
Right click My Computer>Manage
In the left menu click on Device Manager
Maximize (+ button) Sound, video and game controllers
Right click all Audio associated items and click update driver. You may need to insert the driver disk for your sound card (or motherboard if your using integrated audio)
If that doesn't work, visit the website of your video card (or motherboard if using integrated audio) manufacturer. Navigate to "downloads" then "drivers" and find your product, then download the new drivers. Keep in mind you'll have to uninstall your old drivers before you can install the new ones. You can uninstall old drivers through aforementioned Device Manager.
Hope you solve your problem, and good luck!
-Mavirick