I have an inspiron 1420 which I had reverted from vista back to good old xp pro. I have literally been searching for an answer to this problem for the past (at least) 2 weeks. I can't play any audio or video on my laptop without getting a static type sound and both are also very glitchy and choppy. I have tried reinstalling the drivers and all of that. I changed back to sp2 and tried a few things regarding that as well. I am definately at my witts end and I am really hoping someone can help me. Thank you in advance for any assistance you can provide!