Could you please let us know the Intel® HD Graphics driver version you are running? Please go to Device Manger> Display adapters> Intel(R) HD Graphics right click on Properties and then go to Driver, you will be able to see the version installed.
I currently have no Intel drivers installed on my Lenovo V470 laptop.
However, below are the Intel driver versions I have installed and had the same display issue with all of them.
From Lenovo's website
- Intel Onboard Graphics Driver ver. 184.108.40.2062
From Intel's website
- Intel® HD Graphics Driver for Windows* 7/8-64-bit Version: 220.127.116.11.4229 (Latest)
- Intel® HD Graphics Driver for Windows* 7/8-64-bit Version: 18.104.22.168.4101 (Previously Released)
Is there any change you can test your computer with the old memory stick, the 4 GB RAM?
I would recommend to perform a Low-Level format, see here for more information How Do I Low-Level Format a SATA or ATA (IDE) Hard Drive?
Yes, I was able to find and test the old 4 GB RAM Samsung memory stick on the laptop. I installed the latest Intel Graphics drivers and so far I haven't had any issues with the display. I also ran GPUTest 0.7.0 benchmark and stress test without getting the display issue. =)
It may have been bad or incompatible 8 GB memory stick all this time -- good catch!
Thank you for all your help!