2 Replies Latest reply on Aug 10, 2015 10:04 AM by Concentration12

    Refresh rate Windows 8

    Concentration12

      Hi all,

       

      I have a HP 850 G1 laptop (Intel 4400 graphics). I used to have the display adapter set to a 40p hz refresh rate because this solved the problem I had before with screen flickering at a lower brightness.

       

      After updating to Windows 10 the 40p hz option was no longer visible. Since I hoped the problem would be solved by switching back to windows 8, I did a factory reset but now I am still not able to get it back to 40 hz. When I try to install the latest driver from intel.com it gives the notification that the system doesn't meet the minimum system requirements, so I have the somewhat older driver that the HP Support assistant automatically installs.

       

      I have also not succeeded in creating a custom resolution through the CustomModeApp, because it gives the 'exceeds the maximum bandwith' notification at all settings that differ from 60p hz.

       

      Any help/suggestions would be greatly appreciated!

        • 1. Re: Refresh rate Windows 8

          The notification you are getting when installing the driver is caused by the driver signature. You need to overwrite the driver manually so you can by pass that stage.

           

          Try these steps:

          https://communities.intel.com/docs/DOC-22542

           

          Kevin m

          • 2. Re: Refresh rate Windows 8
            Concentration12

            Thanks so much for your reply! In the meantime I've managed to install the latest driver, but unfortunately it's still not possible to set the refresh rate to 40p hz.

             

            Here is the information from the Intel Graphics Control Panel. Do you perhaps have any other suggestions with regards to enabling the 40p hz setting?

             

            Thanks very much for your help!

             

            Report Date: Monday, August 10, 2015

            Report Time [hh:mm:ss]: 6:01:01 PM

            Driver Version: 10.18.14.4251

            Operating System: Windows* 8 Pro (6.2.9200)

            Default Language: Dutch (Netherlands)

            Physical Memory: 3993 MB

            Vendor ID: 8086

            Device ID: 0A16

            Device Revision: 09

            Video BIOS: 2175.1

            Current Resolution: 1920 x 1080

             

            Processor: Intel(R) Core(TM) i5-4200U CPU @ 1.60GHz

            Processor Speed: 2295 MHz

            Processor Graphics in Use: Intel(R) HD Graphics 4400

            Shader Version: 5.0

            OpenGL* Version: 4.3

            OpenCL* Version: 1.2

             

            * Microsoft DirectX* *

            Runtime Version: 11.1

            Hardware-Supported Version: 11.1

             

             

            * Devices connected to the Graphics Accelerator *

             

            Active Displays: 1

            * Built-in Display *

             

            Display Type: Digital

            DDC2 Protocol: Supported

            Gamma: 2.2

            Connector Type: Embedded DisplayPort

            Device Type: Built-in Display

             

            Maximum Image Size

            Horizontal Size: 13.39 inches

            Vertical Size: 7.48 inches

             

            Supported Modes

            1920 x 1080 (60p Hz)

            1920 x 1080 (40p Hz)

             

            Raw EDID:

            00 FF FF FF FF FF FF 00 0D AE C2 15 00 00 00 00

            04 17 01 04 95 22 13 78 02 46 35 9E 57 57 94 27

            14 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01

            01 01 01 01 01 01 B4 3B 80 4A 71 38 34 40 5A 3C

            69 00 58 C2 10 00 00 1A CD 27 80 4A 71 38 34 40

            5A 3C 69 00 58 C2 10 00 00 1A 00 00 00 00 00 00

            00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02

            00 0C 33 FF 0F 3C 96 21 14 33 96 00 00 00 00 70