HP cv7540 ユーザーズマニュアル

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Operating the Monitor 
Out of Frequency Range Message 
If an Out of Frequency Range message displays on the monitor 
screen, the video resolution and/or refresh rate are set higher than 
the levels the monitor supports. 
To change the video resolution or refresh rate on the monitor: 
1. Restart the computer. 
2. Enter Safe Mode on the computer. Refer to the computer’s 
operating system Help for instructions on entering Safe 
Mode. 
3. Change the display settings to a supported setting (see
“Technical Specifications”).
4. Restart the computer so that the new settings take effect. 
User Guide 
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