Do you have a screenshot with artefacts on it?
I have the same issue, also using HD4000. About to update my driver to the december release, currently on the driver released before that
EDIT most recent driver doesn't seem to have the issue. On low settings there'll be a flicker on rare occasion, but it didn't seem to occur with medium shaders. This issue may've been fixed in an earlier release though, since I mostly noticed the issue when I started in September
Hi schoukro and serprex,
Have you tried this driver?
Windows 7/ Windows 8 64-bit: http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=22373&lang=eng
That is a newer version of the graphics driver we have available in our website.
I recommend also you try updating the BIOS of the computers.