Why is the laptop screen white? How to fix?

Laptop screen is white why? How to remedy this situation? If your computer is in a similar situation and you are wondering how to handle it, don’t ignore the following article of HC!

1. Cause the laptop screen is white

Screen Condition laptop When turned on, the interface is white, the interface does not display any images, usually due to the laptop’s hardware failure:

– Error screen cap is broken, broken, poor signal transmission.

– Error due to VGA chip integrated discrete video card.

– Error mainboard lost voltage, damaged components, ….

– Laptop is strongly bumped or soaked in water, causing problems with internal components.

2. How to check the cause of the white screen error

Before giving a solution to the laptop screen error, you need to check what is causing it.

To test Laptop screen is white For any reason, follow these steps:

– Test with another monitor that is working properly.

– Connect this monitor to laptop via VGA or HDMI cable.

– Restart the laptop:

+ If the screen is still white: the cause is broken mainboard or VGA chip error.

+ If the screen works normally: the error is caused by the broken or damaged display cable.

3. How to fix it

With 2 white laptop screens that we want to mention to help you have a correct way to handle every time your computer or laptop falls into any situation.

3.1. Fix laptop screen that is white due to water absorption

When the laptop is soaked in water, if you do not handle it carefully (for example, in a hurry to turn on the screen), it can lead to a serious condition. Laptop screen is whitedoes not appear.

How to properly handle a laptop with white screen:

– Power off the laptop

– Disassemble the laptop and begin to process the water soaked in the machine, avoiding the microchips / other components in the machine to be affected.

– Reinstall the laptop and bring it to reputable and genuine repair facilities for technical experts to accurately check and have the best solution.

Note that the laptop screen is white: After you have absorbed all the water, do not turn on the power again. This can cause the circuits to short out, which is very difficult to repair.

3.2. Fix white laptop screen due to hardware failure

Laptop screen is white due to 2 main reasons:

– Hardware error.

– External influences.

With hardware errors, you will proceed to check and fix as follows:

– Step 1: Check the cable connecting the board to the monitor.

If you find that the cable segments are broken, open, or abnormally bulging, replace the screen cable for the laptop so that the white screen situation disappears completely.

– Step 2: Check the 3V B+ voltage of the monitor.

If you check and find that 3V B+ voltage loss is the cause of the white laptop screen, please:

+ Level 3V voltage point on the screen.

+ Or repair the board.

– Step 3: Check the voltage applied to the display ROM.

– Step 4: Check the part behind the fuse with voltage B+ -> Measure the impedance at the fuse pin.

+ If < 100Ω: normal operating voltage.

+ If it fluctuates in the range of 200Ω: the voltage is shorted.

This error may be caused by a damaged color decoding IC, or a short circuit to raise / lower the voltage of the display.

– Step 5: Measure the impedance of the display raising/lowering circuit coil or the circuit fuse.

+ If the short is out: the voltage booster or low voltage circuit is faulty, it is necessary to repair this circuit.

+ If not out of short: error of color IC.

Note that the laptop has a white screen: When you bring the machine to check, repair or replace components.

– Choose genuine repair facilities and centers.

– New components must have clear origin, invoice and warranty stamp.

– If there is still a warranty period, bring the device to the original purchase facility for free repair.

>> Reference: Things to do after installing Windows 10 you should do now.

Above are HC’s sharing about the cause, how to check and fix the situation Laptop screen is white. Hopefully the article will help you be proactive in checking and giving solutions when the laptop has a similar problem. Thank you for your interest!

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