We have not seen any similar issues with the generic drivers we provide for that video controller.
You could try using version 2509 available on the following site and see if the issue persists:
Keep in mind that this is a generic driver. However each Original Equipment Manufacturer provides their set of customized drivers to support the changes they make on their systems. So we always suggest using the drivers that are directly tested and provided by your computer or motherboard manufacturer.
I have a Lenovo x220 and I beleive that this happened when I went to "Update and Drivers" as I do periodically. As part of the update, I downloaded and installed the the new "GT1/GT2 Display Drivers (220.127.116.1122)". I have reinstalled it several times from both Lenovo's site and Intel's, tried to delete igfxext.exe etc. Nothing seems to work. Any ideas on how to roll back to the driver before this update? I have to imagine not a coincidence that as soon as I downloaded I keep getting this error. I don't think having any affect on my computer's performance but one of those things that will keep me up;-)
I had exactly the same Problem with my acer Notebook. I downloaded the Graphics Driver from the acer-homepage, uninstalled the generic Intel driver and reinstalled the acer-driver. This did not help. Then I renamend the "igfxext-exe" (you'll find it in "windows" - "system 32") and dragged the "fresh" igfxext-file from the unzipped acer installation folder into the system32 Folder and deleted the dammaged file which I renamed beford. In my case, this worked.