Causes And How To Fix It When The Laptop Screen Is White

Laptop screen error seems to be a dilemma and has no end. One of the most common errors on laptops is the blue screen. Besides, the white laptop screen error  is also reflected by users a lot. Not for you to worry, in the article below, WebTech360 will help everyone better understand the cause and how to effectively fix the white screen error.

1. The cause of the white laptop screen error

The cause of the white laptop screen error

- The white laptop screen error usually occurs when you turn on the computer. At this point, the interface will not display, instead a blank laptop screen. The cause of the white laptop screen error is usually caused by the hardware inside the user's computer. Some of the top causes of a white laptop screen are:

- Due to the error of the screen cable is broken, damaged, broken or poor signal transmission.

- Error of VGA chip on laptop computers integrated with discrete video cards: This error often arises in the Southbridge chips that manage with I/O or when shutdown, power-on operation, ...

- Due to the fault of the mainboard such as voltage loss, damaged components or errors, ...

- The laptop screen is strongly bumped or dropped into water, ...

2. Check the cause of the white laptop screen

In order to effectively fix the white laptop screen error, you need to understand where the cause of this situation is from. To test, people need to have another laptop screen working properly.

At the same time, it must be connected to the white error laptop screen via VGA or HDMI cable. Next, restart your computer and test.

In case the laptop screen is still white, surely the cause of the white error is the damaged mainboard or the VGA chip error. On the contrary, if the laptop screen still works normally, the cause is a broken or faulty connection cable.

3. How to deal with a laptop with a white screen?

3.1. Instructions on how to fix the white screen error caused by falling in water

Instructions on how to fix the white screen error caused by falling in water

For these cases, it may be because you did not handle it carefully when the laptop screen was dropped into the water and hastily turned on the computer. That leads to a white laptop screen.

To effectively fix this error, you need to turn off the power and remove the laptop and then proceed to process all the water inside the entire computer. The purpose of this is to prevent water from contaminating other microchips.

Next, everyone, please attach the screen and bring your laptop to a reputable repair center for a quick fix. Absolutely do not turn on the power again because this can cause the IC to short-circuit and be difficult to repair.

3.2. Instructions on how to fix the laptop screen is white due to hardware failure

Instructions on how to fix the laptop screen is white due to hardware failure

After determining the cause of the white screen of the laptop error, you can proceed to fix it by following these steps:

Step 1: Check the cable connecting the board to the laptop screen: If you see that the cable lines are abnormally open, broken or bulging, you should replace the connecting cable. If you don't see the symptoms outside the connection cable, try unplugging the display cable and plugging it back into the connection port, then restart the laptop. If the computer works normally again, the cause of the white screen error is a broken connection cable.

Step 2: Check the 3v B+ voltage of the laptop screen: If there is a 3v B+ voltage loss, please proceed to repair the board or apply a 3v voltage point to the screen.

Step 3: Check the voltage supplied to the screen ROM.

Step 4: You look behind the fuse with voltage B + and then measure the impedance at the fuse pin. In the case of less than 100Ω, the voltage is still operating normally. However, if it is within 200Ω, it means that the voltage is shorted. Usually the cause of this situation is due to a short circuit in the voltage booster, color decoder IC or screen voltage (22v, -6v).

Step 5: Take out the low-voltage, high-voltage coil or fuse of the circuit and then measure the impedance. If you see the short circuit, it is due to the low voltage or high voltage circuit. At this point, let's proceed to repair this circuit. And if it is still short, it is because of the color IC error.

Above are some sharing about the causes and how to fix WebTech360 's white laptop screen error .. In fact, this error is usually caused by microchips, hardware and components inside the laptop. Therefore, to fix the white screen laptop error, you need to have specialized equipment to support and high expertise. If you are not sure about your skills and do not have enough equipment to do it, please bring your laptop to a reputable repair center to be checked and fixed.