Windows 10: display on monitor / projector

Today our computer refused to connect with the projector we've been using for several months now. We use a Belkin to go from computer to the vga input of the projector. Now whenever the Belkin is plugged in to the computer, the computer's monitor goes blank; this would be fine, if the projector would connect and we could see the display image projected. But no such luck. Nothing is displayed...until we unplug the Belkin. Then, of course, we have computer monitor again.


I know the way to get to multiple screen displays (Windows P) - but when the Belkin is unplugged, and I can see the computer monitor, obviously there is no other display that can be detected. And conversely, when I have the Belkin plugged in so I can detect monitors, I can't do it because I have no display either on the computer monitor or the projector.


Any clues???

:)

 

Duplicate Display on an external monitor & a projector

I can no longer Duplicate Display on an external monitor & a projector. This function stopped working after the latest Windows 10 update.

I can still detect two video sources external to the laptop, but cannot have the same video on both monitors simulateously.

 

HDMI to monitor but not projector

Thanks. Drivers are up to date. Dell are now suggesting I need a new motherboard, which seems a bit extreme! I have now discovered that if I switch on either laptop or projector when connected by HDMI, it will owrk. But there is no 'plug and play' with the
projector, though there is with a monitor.

So at least I have a workaround, and that's good enough, I guess.

Thanks for your help.

Richard.

 

One external display (projector), 5 shown in Display Settings.


I've tried searching the forums but haven't been able to find anyone with the same problem, so if a thread already exists and I just failed at finding it please point me in that direction.

I have a Lenovo L440 laptop running Windows 10 1607, it has an Intel HD Graphics 4600 video card which lists the last available driver as 15.40 from the 23rd of June 2017.

It has an issue where I connect a projector and I get the flashing display to indicate another display was detected and connected, but nothing displays out to the projector (which is set to use the correct input). I press the shortcut to duplicate the displays and nothing happens. I go in to display settings, and see 5 displays (give or take depending on the laptop) despite only one external one being connected. If I tell it to use displays 1 and 2, nothing, so disable display 2. Then tell it to use displays 1 and 3, nothing, so disable display 3. Repeat this process enough time, it'll eventually come to the display the projector is configured as (sometimes having to add additional displays to what was being shown originally).

It's OK for me to do this as I'm the IT guy, but it's not OK for the staff to do this.

Here is a sample screenshot from another machine with the same problem. Only one external screen (2 in total) is connected.





Some machines with more up to date video cards such as Intel 540's have had driver updates putting them to 15.46, and the problem is thus resolved. It's back to behaving as expected for displayed screens and sending output to the right spot. But the laptop in question won't take those drivers.

Does anybody have any suggestions for other things I may try to resolve this?