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I bought a new Lenovo ThinkPad T530 (2429, Win7 Pro, 64-bit) at which everything worked fine. On the Docking Station, I'm using two external, additional displays. At one day, I installed a USB-to-HDMI-Adapter. Starting at this moment, igfxext.exe crashes at startup of windows 2-4 times (random). I updated the HD Graphics 4000 driver to the version 188.8.131.5261. I cannot use the newest one because it keeps on saying, that my notebook does not meet the minimum requirements of that driver (http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles/g1d624ww.exe and Download-Center).
Does anybody has a solution for this problem? I also installed the newest provided nVidia-Driver which does not help either.