GPU Will Only Display To TV When Another Monitor Is Also Connected To Motherboard?
Aug 9, 2015
For the last 2 months since I got my new PC, I have been using my TV as a monitor for my PC. I had a few issues with resolution due to my TV overscanning the display but I used the resize feature in the NVidia control panel. However, yesterday when I downloaded Windows 10, it installed fine but when my computer opened up again it was trying to use my TV's native resolution which was a problem because of the overscanning. So I went to the NVidia control panel, and when I clicked the resize button (before choosing the new resolution) the TV just said it was receiving no input. Whenever I then tried booting my PC, it would display to my TV until Windows had loaded, then it would say no input.
The same thing happened when I connected to the TV through my motherboard rather than my GPU. So I spent ages trying to get it to work and eventually connected it to an old monitor. However the monitor only has a DVI input slot, which my GPU doesn't have, so I had to connect it through my motherboard and it worked fine. I then uninstalled all NVidia stuff from my computer, including the gpu from my device manager, and manually installed the new GTX 970 windows 10 driver from their website.
When this was done, I connected my graphics card to the tv through the HDMI, keeping the computer connected to the monitor through the motherboard. Both displays then worked as a dual display setup. However, even now whenever I try booting up my PC with only my gpu connected to the TV the same thing happens that was happening before and the TV will only display through the GPU when the motherboard is also connected to the monitor. I have ordered a DVI to HDMI cable so I can attach my monitor directly to the GPU, which will hopefully work, and then I will stop using my TV, but I would rather fix this problem and carry on using the TV until I can buy a better monitor.
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