Realtek On-Board Audio, "scratching"?

Hi,

so I have Realtek Audio onboard
(Mainboard: GA-MA74GM-S2H (rev. 1.0) -> Realtek ALC888 codec
High Definition Audio
2/4/5.1/7.1-channel (Note 2)
Support for S/PDIF Out
Support for CD In)

Now I recently changed to Windows 7 and noticed (especially noticeable when e.g. listening to music), sometimes the sounds gets "scratchy"(scratching) for half a second or so (pretty short). Never had that problem with Win XP (which I used before Win7)

Any Ideas? (yeah i use the latest drivers)

I have a similar setup. When you say that your getting scratching sounds, is it when listening to music on speakers or headphones? Have you checked to ensure that your input jacks are securely tight? Have you gone into Realtek HD Audio Manager and checked the settings?

Uh sure I did even pulled them out and put them back in xD
Headphone/Speakers, happens with both (but with all sound, not only music, just because music is constant sound, it is more noticeable)

Also which settings? Bet theres no Checkbox "Make Sound weird randomly" ;D

What I noticed seems to happen mostly when I play (full screen) games like League of Legends or Runes of Magic

So uh, i tried it with Onboard and PCI Soundcard, happens with both, further it only happens whne I use the keyboard (e.g. typing), not wiht mouse clicking, if i use that playing mini-keyboard (only has like some letters and with gaming, layout) it doesn't happen :/