Received this HP Pavilion p6750f yesterday, and there is a problem with sound...not my hearing..the computer. I'm using my older Polka Audio speakers (2) that are not powered. Just the 1/8" pin type. The Windows 7 setup went very well, and no problems until I found there was no sound from the speakers. Rechecked to make sure I had connected to the correct (line green) port on the rear of the PC. I turned up the volume to 100% and still no sound. Today, I went to HP Help & Support to get the leatest software/drivers. That didn't work, so, went to control panel and into sound solutions, and that didn't work. I'm thinking this PC may have a bad sound card or something not working in that department. It may come down to buying new USB powered speakers. And if that doesn't do the trick, a highly expensive sound card. However, if someone here had or know a solution, please speak. Thank you.