If you already downloaded the latest graphics drivers off Intel web site 18.104.22.16875, make sure your computer is not a switchable graphics computer; this means your system may have Nvidia or ATI card to work in conjunction with the Intel graphics.
If your system is switchable, Intel drivers won't work for your machine and you will need to contact your computer manufacturer to get customized drivers for your computer model.
See here for more information:
I also have the same issue and i dont have any other Graphic card installed. i have an i7 3770K. i installed Hitman Absolution and could not play the first time. Then i updated the drivers and voila the game started working. for days i was thinking what could go wrong bcoz i could play all other latest games like far cry 3 and assassins creed 3 for that matter. but then i turned off my pc and turned it on after some time. then the game stopped working. please help me out.