El_Mago_Peppins

Hi all, I have a problem when I try to record screen video and audio. I have a creative fatal1ty as for audio card, and the problem is: if I set the recording option to "speakers" it ask me to install an device driver, I install it then reboot pc. After this, when I enter in windows the sound is very very bad and listen slowly so if i play any sound the pc freeze and I need to restore the system. Where is the problem? Systen: os: win 7 ultimate x64 gpu: nvidia gtx 570 audio: creative fatal1ty pro