Sony HDR-CX440 How To Use Manual page 167

The ambient temperature is too high or low. This is not a malfunction.
The battery pack has not been charged enough. Fully charge the battery again.
If the problem persists, replace the battery pack with a new one.
[190] Troubleshooting
Menu items are grayed out.
You cannot select grayed out items in the current recording/playback situation.
There are some functions you cannot activate simultaneously.
[191] Troubleshooting
The buttons do not appear on the LCD monitor.
Use the multi-selector.
[192] Troubleshooting
The buttons on the LCD monitor quickly disappear.
If you set [Display Setting] to [On], the buttons do not disappear from the LCD
monitor while in recording mode.
[193] Troubleshooting
There are dots in the shape of a grid on the monitor.
These dots are a normal result of the manufacturing process of the monitor and
do not affect the recording in any way.
[194] Troubleshooting
Troubleshooting
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Troubleshooting
Monitor
Monitor
Monitor
Monitor
Monitor