What should I do if my computer starts up and the screen shows a black screen with no signal?

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Tutorial on how to solve the problem of a black screen with no signal when the computer starts up: 1. Check whether the monitor cable is correctly and firmly plugged into the host interface, and then check whether the contact between the graphics card and the motherboard I/O slot is good. You can remove the graphics card and clean the dust. Plug it in again and so on. This topic provides you with relevant articles, downloads, and course content for you to download and experience for free.