Alright. Brand new spanking system. Asrock P55 Extreme, i5 760, Sli gtx 460s. Everything is perfectly fine except for this HORRIBLY annoying audio crackling/popping that occurs constantly. So, I begin to take steps in order to see what could possibly be wrong with my computer. First off, I download DPC latency checker. It shows me that every now and then that I get an absolutely insane absolute maximum of about 100,000 or something, which means that something is probably messed up badly with the drivers. I was like, no problem I'll just try to find the problem. Well I pretty much tried disabling a bunch of things and it still messed up all the time. I also got sound pops/crackles that DID not show up on thee DPC latency checker. I then said all right, maybe the integrated sound card sucks. I also had downloaded up to date drivers for the realtek at this time. I then decided to test my brother's Asus Xonar D1 in my computer, the stuttering was still apparent!!!. I also flashed my motherboard to the latest bios. All my setting in bios right now are at default. I then decide to use a live CD of linux mint, and there was no stuttering/pops present which made me rule out the possibility of the motherboard being screwed up. I then decide to do a totally fresh install of windows 7 64 bit and the first thing I do is go to youtube/install flash player/ play a music video and the stuttering/popping is still present! I've installed the audio drivers/ lan driver/inf driver/ jmicron sata2 driver on asrock's web site and the stuttering is still present. I've tried disabling one of my videocards in sli and that didn't fix it either. I went and made sure that none of my connections were loose on my motherboard. I'm at a loss for words here, and I'm just frustrated with this issue. Sorry for the rant, but I'm quite frustrated with this. Does anyone have any suggestions?