02-16-2012 02:28 AM
I have recently installed Windows 7 on a Lenovo Thankpad R400 which previously had Windows XP on. Since installing Windows 7 the sound has not been working. Windows 7 detected the sound chipset (Connextant SmartAudio) and installed it own driver, I have also tried the Windows 7 driver from the Lenovo web site. Both drivers seem to install ok but I still dont get any sound.
I have heard that the is a known issue with Windows 7 and the Connextant chip in R400, is this true?
Sound was working fine on Windows XP.
I would be greatful for any help or advice.
Thanks in advance
02-20-2012 04:25 AM
Kindly update the BIOS and check if the issue resolves.
Please download the BIOS update for 32bit Operating System
Please download the BIOS update for 64bit Operating System