If you want to re-enable the motherboard HDMI port, you can sometimes do so by right-clicking the desktop and switching there, but you may need to do so through the BIOS (though it’s generally better to use the port on the GPU because you’ll be utilizing your GPU’s power that way). Normally, if you have a GPU connected, the HDMI port on the motherboard will be disabled. If that doesn’t work and your computer has an HDMI port on both the GPU (graphics card) and the motherboard, double-check that you’re connected to the correct port. One of these should cause the image to appear. To begin, press Win + P on your keyboard until you reach the Extend, Duplicate, or Second Screen Only options. While hardware issues are addressed elsewhere in this guide, there are a few things you can try on the Windows software side.
When attempting to connect your TV to Windows 10, you may receive the No Signal message for a variety of reasons. If you’re connecting a laptop/computer or other screen-sharing device to one of the HDMI ports on the TV, you must first disconnect it. It’s a straightforward process of elimination. If the problem persists, you’ll need to troubleshoot the individual connections one by one. You can try turning off the TV, waiting a few minutes, and then restarting it. If your TV says there is no signal even though it is set to the same source or input as the cable box, you have a network reception problem. Most TV manufacturers have an auto connection mechanism that detects and displays the device on screen as soon as you turn on the remote.
#Comcast box no signal on tv how to
TV Says No Signal But Cable Box Is On: How To Fix In Seconds? WHAT EXACTLY IS A “NO SIGNAL” PROBLEM?
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