Reply to USB I/O Errors

Hey DJTT, I have been using my Audio 4 DJ Soundcard for about 2.5 months and haven't had a single problem until now... I have tried to fix it but I don't know how to. I use the Audio 4 for outputting all my audio from my computer and it keeps like glitching out and sounding like a skipping disc. I have tried deleting and updating the drivers and still no progress. I really need this fixed fast. I have any up coming gig that I will need this for. Also on the Audio 4 DJ control panel it is reading it as a USB I/O Error... so its something to do with one of those... there has been no damage to the device itself so I must be a driver or something. Well if you know how to fix this problem it would be a real help. Either I.M or Reply Thnx.