I have the Presario V6500 (P/N here if you need it: GT406EA#ABU) with Windows 7 installed.
My sound was working fine about a month ago, and then it suddenly decided to stop working. When i looked in the device manager to see why it said there was no drivers installed. Which i dont understand because it was working fine before. I didnt get any error messages or anything and frankly, im thinking about scrapping it. Ive been to countless forums asking for help and the suggestions made didnt work.