What should I do if the computer beeps twice when I turn it on and the monitor has no display?

What should I do if the computer beeps twice when I turn on the computer and there is no display?

This situation is mostly caused by a graphics card failure. It is best to replace each piece of hardware one by one to troubleshoot.

Cause 1: The screen will go black if the monitor is not in good contact

Solution: Remove the interface from the back of the monitor to the main chassis and clean it, then try to connect it again. Be careful not to disconnect the interface. Connected backwards. If there is no problem with the contact, it is best to try another monitor to determine whether there is a problem with the monitor.

Cause 2: The memory module is not in good contact and the screen will be black

Solution: If the memory module is faulty, there will usually be a long and short beep sound. If there is an alarm sound, you can open the case. Take out the memory stick and wipe it clean with absolute alcohol or an eraser. Then insert and unplug it again or try another slot. Be careful not to insert the memory stick backwards.

Reason 3: If the graphics card is not in good contact, the screen will go black. You can remove the graphics card, clean it, and try connecting it again. If there is no problem with the contact, it is best to ask someone to borrow a different graphics card to try to determine whether it is a graphics card problem.

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