After the sofa butler maintains the computer to connect the projector to show that there is no signal, presumably we have had more or less experience like this. Generally speaking, this has to be discussed in two situations. First, the notebook computer is connected to the projector without a signal; second, the desktop is connected to the projector without a signal. Here I will give you a detailed introduction of how to solve the problem in two different situations.
Laptop connection projector no signal:
1. Check whether the projector is connected to the computer using a VGA cable or an HDMI cable;
2. If it is a VGA connection, please check whether the projector is selected to VGA or computer mode. If it is HDMI connection, please check whether the projector selects HDMI mode, that is, the selection of the signal source input;
3, open the projector, if you can not display, according to the different laptop models press the function keys, FN + FX (F1-F12 one of the switch button). Normally, there are three modes for switching between two displays. You can press it once, twice or three times, and try it out.)
4. Open the notebook's hardware settings or use the TSETUP.EXE command directly in the DOS environment to find options and commands related to the display. Then change the package display to “simultaneous†and then use the right mouse button to In the blank space, execute the "Properties" command from the shortcut menu that pops up. In the setting box that appears, select Monitor 2 and the "Extend my Windows desktop onto this monitor" check box in the corresponding interface. In the last click on the OK button in the Properties dialog box;
6, restart the computer.
Desktop connection projector no signal:
1, according to the resolution of the projector to adjust the computer resolution, usually the refresh rate is adjusted to 60 Hz can be, some higher, it is best to try one by one, and then shut down, re-use VGA to connect the projector, and then boot;
2. Right-click on a blank part of the desktop, then select "Properties", then select "Settings", then deselect "Extend the Windows desktop onto the monitor" (note that if it is gray, it cannot be canceled, the above monitor Choose where to change another monitor)
3, restart the computer to see if the projector can detect the computer signal.
4, if the above operation is no problem, the projector still shows no signal, you can try to change the root cable;
Laptop connection projector no signal:
1. Check whether the projector is connected to the computer using a VGA cable or an HDMI cable;
2. If it is a VGA connection, please check whether the projector is selected to VGA or computer mode. If it is HDMI connection, please check whether the projector selects HDMI mode, that is, the selection of the signal source input;
3, open the projector, if you can not display, according to the different laptop models press the function keys, FN + FX (F1-F12 one of the switch button). Normally, there are three modes for switching between two displays. You can press it once, twice or three times, and try it out.)
4. Open the notebook's hardware settings or use the TSETUP.EXE command directly in the DOS environment to find options and commands related to the display. Then change the package display to “simultaneous†and then use the right mouse button to In the blank space, execute the "Properties" command from the shortcut menu that pops up. In the setting box that appears, select Monitor 2 and the "Extend my Windows desktop onto this monitor" check box in the corresponding interface. In the last click on the OK button in the Properties dialog box;
5. If it can't be displayed again, adjust the display resolution (1024x768, 800x600, etc.) in the display properties; set the display refresh rate by "Display" - "Settings" - "Advanced" - "Monitor" settings (usually 75HZ);
6, restart the computer.
Desktop connection projector no signal:
1, according to the resolution of the projector to adjust the computer resolution, usually the refresh rate is adjusted to 60 Hz can be, some higher, it is best to try one by one, and then shut down, re-use VGA to connect the projector, and then boot;
2. Right-click on a blank part of the desktop, then select "Properties", then select "Settings", then deselect "Extend the Windows desktop onto the monitor" (note that if it is gray, it cannot be canceled, the above monitor Choose where to change another monitor)
3, restart the computer to see if the projector can detect the computer signal.
4, if the above operation is no problem, the projector still shows no signal, you can try to change the root cable;
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