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Re: Dual Screen Problem
Try the driver which is self installing from this site: https://downloadcenter.intel.com/dow...-15-40-4th-Gen-
Read the instructions on the page,
Don't select the zip one use the with .exe extension.
To answer your questions, you have to be connected to a second monitor for the dual screen to appear.
As you say you tested the cable on another monitor then the cable is probably good the only other thing is the HDMI socket on the computer but if it's that it's a job for an expert.
Try the driver first.
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Roy.
Test Laptop: Windows 10 Home Premium 64bit. Acer Aspire 5738G Intel core 2 Duo T6600 ATI Graphics 500Mb dedicated. 4Gb Memory 500 Gb SSD Drive. K-lite Mega version 1205
Show Backup: Windows 10 Acer Aspire Touch Screen V15, Intel core i5, Iris Graphics 6100 up to 8277mb dynamic video, 16Gb memory, 1 TB hybrid HDD. K-lite Mega pac.
Show Computer: Windows 10, Dell Inspiron 15 7000, CPU I7-855OU, Ram 8GB, Graphics UHD620 + Nvidea GeForce 940MX, Hard Drive SSD 256GB + 1GB internal.
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