Computer won’t Turn On and Shows No Sign of Power
1. Poor Connection
Sometimes, computer failing start and showing no sign of power could be caused by the improper power cord or data cable connection. If the connection is not correct or loose, please reconnect it.
2. Bad Power Adapter
If all connections are in good status, it could be the problem of the power adapter. Such as damaged power adapter, insufficient power supply could also lead to black screen. First, we need to have a check of the power adapter. We can connect the computer to another power adapter. If it works well after replacing the power adapter, we can confirm the start up failure is caused by the power adapter.
3. The Problem of the Motherboard
If connections and the power adapter work well, the start up failure could be caused by the motherboard. Here, we should have a check of the cable connection between the motherboard and the other components as well as the power supply button. If it still does not work after checking and fixing, please replace or repair the motherboard.
Computer won’t Turn On but with Powers Lights On
1. Something Wrong with the Monitor
Loosely connected monitor could also lead to black screen or no display after computer starting up. Besides, poor connection between monitor and computer could also lead to this problem. Firstly, we should have a check of the monitor power light. If the power light is off, please try to press the monitor power button.
2. Something Wrong with the Hardware in Computer
f there is something wrong with the hardware in computer, users may encounter the startup failure as well. Here, if we can make sure the startup failure is not caused by the monitor, we’d better to have a check of the motherboard, RAM and video card. Besides, insufficient power supply could also lead to black screen. If it is the problem of the power supply, replacing the power adapter could solve this problem.
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