On a computer that is running Windows 7, some function keys and keyboard shortcuts do not work correctly. Every time that you press a function key or keyboard shortcut, the corresponding function is triggered two times.
For example, assume that your computer keyboard has a built-in Calc key that lets you start Calculator. When you press the Calc key, two instances of Calculator start. Or, assume that you have a Mute key on the keyboard. When you press the Mute key or the Fn+F6 keyboard shortcut to mute or unmute the system sound, the sound is not muted or unmuted.
Notes
This problem is a timing related issue. Therefore, the chances of the problem occurring can be influenced by different factors. Observed examples that increased the chances of the problem occurring include the following:
For example, assume that your computer keyboard has a built-in Calc key that lets you start Calculator. When you press the Calc key, two instances of Calculator start. Or, assume that you have a Mute key on the keyboard. When you press the Mute key or the Fn+F6 keyboard shortcut to mute or unmute the system sound, the sound is not muted or unmuted.
Notes
This problem is a timing related issue. Therefore, the chances of the problem occurring can be influenced by different factors. Observed examples that increased the chances of the problem occurring include the following:
- On a localized version of Windows that has a language bar, you dock the language bar in the taskbar.
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On a computer that has a hyper-threading CPU, you disable the hyper-threading in the BIOS. - You attach a new hardware and install the respective drivers on the computer.