These links may help you update properly\\
http://www.intel.com/support/graphics/detect.htm
&/OR
http://www.intel.com/support/graphics/detect.htm
Intel® Graphics Media Accelerator Driver for Windows* (blah-blah) (exe)
Besides since you have a LENOVO laptop you may only be able to get those specific modified files which you could get here
http://www-307.ibm.com/pc/support/si....do?country=us
also it's not TB problem 100% assured