Sound cutting in and out on headphones and speakers

I know some basics about computers but not enough to troubleshoot or fix this problem on my own.

Just recently I noticed my headphones' sound cutting out and coming back in (sound for a few seconds and silence for a few minutes). This problem hasn't gone away even after switching to my speakers. This hasn't happened before with the headphones or the speakers so I think it has to do with my soundcard.

I have no idea what is needed to troubleshoot, please tell me to add onto this:

Motherboard: Biostar TF 570 SLI
Sound Card: It's built into the motherboard
OS: Windows XP Professional x64 service pack 2
Device manager sound options is attached in a jpeg.
Headphones: Turtle Beach Ear Force HPA2 5.1 channel surround sound
Speakers: Some kind of Yamaha, 2 speakers 1 subwoofer.

Please help.

looks like a corrupted driver,

please try to un-install & re-install the sound driver.
(from CD that comes with your motherbaord)

if that didn't worked,download your latest driver from the link below:

http://www.biostar.com.tw/upload/Driver/Audio/Realtek/HD/2KXP/setup.exe

Fixed. Thank you xD, after reinstalling the drivers everything seems to be working perfectly.

you're welcome