I reinstalled the os. then ran sfc /verifyonly. it passed. i continued the install everything else. I got BSOD after i installed call of duty 4 and tried to run it. the same cause like before nvidia sata controler. My question is, is for some reason the files i am keeping on the pc(game patches and stuff) corrupted. I installed call of duty from disk but the patches are on the hard drive in another partition. Also while audio seems perfect with music and videos. i am getting issues when playing games. company of hereos has a slight static crackling sound, not all the time and not loud. I installed the brand new X-fi beta drivers that i heard where really good for vista.