A friend of mine who bought a second-hand LG V1 Express Dual Laptop, has asked me to reinstall the OS because there was a boot problem. I tried installing Windows 98, Windows XP, Windows Vista and Windows Seven. Any OS can be installed, but there is no audio output. All attempts of automatic updating of drivers failed. However, when I boot with an Ubuntu Live CD (even without installing), I can here the logging-on sound. Could anyone help me find the necessary drivers or fix the problem in some other way...?