Couple of things, i can think of. Sometime there is a key eg. To switch to an external display does this do any thing?

Feb 9, 2019 - I have connected my Acer Aspire 5742 Laptop to my Bush 22' HD TV with the.

The Graphics drivers - do they see the new display? Is the Cable HDMI at both end's? Does the Cable work if you plug it into a DVD player and the same TV? Does the Laptop need to have a certain HDMI version to send the data to the TV? Are you running the resolution of the graphics card at a compatible resolution for the TV? Can you supply the Thread with the exact make and model of both the TV and the Laptop?

I am using a Samsung LED TV (native resolution 1920x1080), as my computer monitor connected through HDMI. The OS resolution is set at 1920x1080 and the NVIDIA driver reports the same.

The computer is a desktop with the NVidia GTX 680 graphics card and only has this one screen connected to it. However, some programs including Steam and some games seem to think the resolution is lower. Plus recently, I was writing a graphing tool and was surprised to see that the resolution is being reported as 1536x864 when I try to access it programatically! The above resolution also seems to be what Steam assumes and does not maximize beyond that point. Please note that this behavior was the same when I had Windows 7 on the same configuration.

Have now installed 8. Samsung has not been helpful. In my case, the TV was not detecting in Windows 10 display settings, but in Windows 7, I was able to see the TV in the display settings. Also, the HDMI connected LCD was showing Red, Blue and Green dots across the display. I tried two ways to solve this thing. Make sure you have latest driver of the Graphics card installed.

• If you are in Windows 7, lower the resolution in display settings and check if it works. You have to match the display setting of your Monitor. If your TV is full HD and monitor is only HD or has 1360x768 resolution, make sure you select the same resolution in display settings. • If you are in Windows 10, you wont be able to detect the TV in the display settings, if it detects, apply the same method as mentioned above.

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If not, then go to control panel of your Graphics card (in my case it was NVIDIA) and head on to Change Resolution option. There you would find an option like Output Color Depth.

Lower it and the problem would be solved.