Thinkpad Edge S430 - Windows does not detect external display connected via HDMI

On a Thinkpad S430 with HD4000 integrated graphics, an external display connected via a HDMI cable is not detected at all when using Windows. The system is fully updated as of the time of posting this message, both via the Lenovo Update tool as well as Windows update.
The Intel driver version is 8.15.10.2696. It appears that this is the latest version, since it does not offer an update when I try to auto-update it via Device Manager.
NB: I am running Ubuntu 12.04 with kernel 3.4.0 on the same machine, and the external display works perfectly fine with this software configuration.
Hence I think that it's very likely that this is a Windows-specific driver issue.
Would Lenovo happen to have a driver update in the works? Alternatively, I will be thankful for any suggestions about possible resolution of this problem.

skn2011 wrote:
My Macbook Pro notbook 13.3" does not detect external display throught it's mini display port to HDMI connector when connected to Sony Bravia 32" LCD TV.Can anyone help me get the answer as i tried reading everywhere on internet and none does not seems to work.Please help me out guys.
Are you using the Apple adaptor or a 3rd party

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