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Article Number: 000135019

Inspiron 5477/ Optiplex 7460 experience Panel failure symptoms includes : Flickering/Cloudy/Line/Colors/Dim/Dark/Ghost

Summary: The Inspiron 5477 or OptiPlex 7460 touch screen may flicker slightly or display with abnormal colors, after the computer resumes from Sleep Mode.

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Article Content

Symptoms

Inspiron 5477 and Optiplex 7460 All In One may experience Panel Failure symptoms include following symptoms:

  • Flickering
  • Cloudy
  • Line
  • Colors
  • Dim
  • Dark
  • Ghost

This symptom occurs when the Touch Screen function was accidentally disabled by Windows 10 OS (Operating System) when the system is attempting to resume from the Sleep Mode.

The issue can be seen in ePSA , BIOS screen, LCD BIST etc.

SLN312804_en_US__1I_lcd_insp_optplx_psqn_01_mr_v1 SLN312804_en_US__2I_lcd_insp_optplx_psqn_02_mr_v1
SLN312804_en_US__3I_lcd_insp_optplx_psqn_03_mr_v1 SLN312804_en_US__4I_lcd_insp_optplx_psqn_04_mr_v1
SLN312804_en_US__5I_lcd_insp_optplx_psqn_05_mr_v1 SLN312804_en_US__6I_lcd_insp_optplx_psqn_06_mr_v1
SLN312804_en_US__7I_lcd_insp_optplx_psqn_07_mr_v1

 

    Cause

    This issue could be reported randomly on:

    • Inspiron 5477
    • Optiplex 7460 All In One

    Resolution

    Follow the instructions below to resolve this issue:

    1. Download the firmware updater tool from the following link and follow the on-screen instructions to complete the firmware update, https://www.dell.com/support/home/drivers/driversdetails?driverId=81M7D

      SLN312804_en_US__8icon Note: Do not power off the computer during the firmware upgrading process.

    2. Run the Scalar Firmware Update Tool, it can be downloaded from the following link, https://www.dell.com/support/home/drivers/driversdetails?driverId=F6NV7.

      SLN312804_en_US__8icon Note: This firmware updater needs to run for about 8 minutes, do not power off the computer during the firmware upgrading process.

    3. Run the rolling pattern tool  from the following link and wait for 2 hours, after 2 hours press the Esc button to quit the application and restart the computer to complete the updates, https://www.dell.com/support/home/drivers/driversdetails?driverId=R6TNF

    4. If the issue is not resolved after following the above steps, please contact your regional Tech Support for assistance.
      SLN312804_en_US__8icon Note：This firmware(FW) update requires the LCD touch screen to be enabled. If you encounter problems during the firmware update process, please first confirm that the touch screen function under the system BIOS is turned on.

    Article Properties

    Affected Product

    Inspiron 5477, OptiPlex 7460 All-In-One

    Last Published Date

    14 Dec 2021

    Version

    4

    Article Type

    Solution

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