检查电源。 检查笔记本电脑充电器。 用备用充电器测试。 检查笔记本电脑电池的电量。 关掉笔记本。 等几分钟。 断开外部配件。 检查显示器是否正常。 去电脑维修店。

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
Ensure that you are using the right type of charger for your laptop. Laptops typically require 16-20V chargers. A charger with a different voltage may not offer enough current to power your laptop. This helps you ascertain that the current charger is not causing the trouble. Make sure the laptop battery has some charge in it. If it is running low on power, plug it in and power it up.  Then restart it. Disconnect all external devices, including monitors, cameras and so on. This way, you can make