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Windows 7 may not hide all unsupported monitor modes

SYMPTOMS
Consider the following scenario:

  • You have Windows 7 installed on your desktop computer.
  • In the advanced settings of the Screen Resolution Properties screen, you select the Monitor tab to view available screen refresh rates for the current desktop resolution.

In this scenario, an unsupported refresh rate may be shown even though the box is checked to "Hide modes that this monitor cannot display".

CAUSE
Windows determines what modes the display can support based on its parsing of the EDID and not what is returned by the graphics driver. This causes some modes that are not supported by the monitor to be exposed in Windows as an available selection.
RESOLUTION
Consult the documentation for your display device to determine the supported resolutions and refresh rates.
MORE INFORMATION
Repro Steps:

  1. Install Windows 7 on a PC with an external DVI monitor attached.
  2. Open Control Panel and select the Display applet.
  3. Click on the "Adjust resolution" link.
  4. Click on the "Advanced settings" link.
  5. Select the Monitor tab.
  6. Under the "Screen refresh rate:", an unsupported mode may be listed even though you have a check mark in the box below for "Hide modes that this monitor cannot display".

Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use for other considerations.
Properties

Article ID: 2628738 - Last Review: 11/12/2011 00:31:00 - Revision: 2.0

  • Windows 7 Enterprise
  • Windows 7 Home Basic
  • Windows 7 Home Premium
  • Windows 7 Professional
  • Windows 7 Starter
  • Windows 7 Ultimate
  • KB2628738
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