Theza Student
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VGA output suddenly stopped working

Elitebook 8440p
Microsoft Windows 10 (64-bit)

I use my laptop regularly to present via LCD projectors using a VGA cable.

 

After a break of 4 weeks, I cannot get the output to work.  On one projector / cable, the display kept flickering on and off, as if the connection to my laptop was physically wobbly at the location where the VGA cable meets the laptop.  On the next projector / cable, my laptop registered that the cable was stable and connected and offered the display options for dual display.  However the display was not shown on the screen.  Both projectors / cables work well with other laptops.

 

Any ideas?

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