How to change primary display device from PEG to PCIE on MSI Motherboard?

yic123

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Apr 23, 2017
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After installing my GPU my screen shows nothing but black. I know this is a common question but all of the other people's answers are "change the primary display device from PEG to PCIE". But I'm new to this stuff so do any of you MSI experts be willing to show me how to do this. I have an A78-E35 V2 if it helps, thank you.