I have a HP Pavilion DV5000 Entertainment Laptop. it came with windows XP. everything worked. I installed windows 7 about a month ago and lost my sound... I waited to see if windows update could find the sound card, so far no luck. there is a speaker bar in the front that says Altec Lansing, I tried so many different drivers, like real tek they install but nothing happens, I even tried installing them in troubleshoot mode etc. I tore this sucker apart and found the sound card I think. it says HAL20 L3-3186P Rev. 1.0 SPECS is a turion 64 and it has windows 7 64 bit, please help. drives me nuts, try to do work but find myself more focused on finding sound problems haha