Hello, there is something wrong with Dell 1420 notebook.

First of all, it is necessary to determine whether it is a true black screen or a false black screen (that is, the screen backlight is gone, and you can still see the words on the screen if you look carefully, and look at it with a flashlight). If it is a fake black screen, the lamp tube is broken and needs to be replaced.

If the real black screen is the graphics card problem, this machine is the graphics card door machine, and it is the graphics card chip of NVIDA NVIDIA 8400. This machine should not be sold after the warranty period. Simply changing the motherboard or repairing the graphics card is useless, because the design of the graphics card chip itself is flawed, there are problems with bonding and welding materials, and there are also problems with notebook heat dissipation.

Therefore, it is necessary to change the 20 10 version of the improved graphics card chip and then change the heat dissipation to avoid recurrence. Both are indispensable. Everyone helps you, welcome to consult the laptop hardware failure. Welcome netizens from all over the world to communicate. Baidu hi and personal information can be consulted on the phone. People from Beijing can come to me, and people from other provinces can help guide and pay attention to problems.