Question: Sometimes, when I start the computer, it turns to be the black with a message No Input or Cable Not Connected. And sometimes, it just shows me the blank screen. Every time my husband would go to help me. But now he is on business and I come across the same issue. What can I do?
Answer: There are various reasons for your blank or black computer screen. It can he the problems of monitor, cables, RAM and other software settings. Here you learn to detect the problems one by one with the following methods.
Yes, everyone believes that he turned the monitor power on before. But someone must forget to turn it on. Therefore, you should check the monitor power and make sure it is turned on. How can we verify that power is on? If there is a faint light on the button of the monitor, the monitor is working. What if the screen is still in black when the power is on? At that time, you can press the menu buttons to wake up the built-up monitor controls. If the computer fails to work, you may buy a new monitor for your computer or check the other options. For the laptop users, you can see this page: how to replace the screen of a laptop.
Sometimes, your computer will be in black or blank after you change the display appearance and resolutions. For this situation, you can access the computer in safe mode and reset the display appearance and resolution.
Step 1: Press F8 key when computer starts to boot up.
Note: Due to a different kind of computers, you should adapt the way of opening safe mode to your computer.
Step 2: In the safe mode, go to the Start Menu and type Control Panel into the search bar to open the Control Panel window.
Step 3: Find and click Display item in the Control Panel window.
Step 4: Find the option called Adjust resolution on the left side of the Display window. Then select a proper resolution for the monitor.
Yes, sometimes, the black or blank screen would be the result of hardware problems. You can check it in the following aspects: