Having a laptop screen turn white is one of the most frustrating problems a user can experience since it prevents use of the laptop to find a solution. A white laptop screen indicates a serious problem with the laptop's hardware, and no easy solution to this issue exists. Just diagnosing this condition requires advanced computer knowledge.
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With this problem, the laptop itself will power on and load the operating system as per usual, but the screen will become a complete, static white, according to LaptopRepair101. No particular brand or make of laptop falls prey to this issue more than any other; it can happen to any laptop.
Since so many different brands and models of laptops exist, specific causes of a white screen vary from laptop to laptop. The likely cause in most cases of a white screen on a laptop is a connection problem between the LCD screen and the video cable running from the motherboard. The issue can also reside strictly with the motherboard or the screen might contain a defect.
Users can diagnose a white screen problem by opening up the laptop display case to determine whether a loose video connection on the back of the LCD screen exists. Reconnecting the video cable should resolve the white screen; a video cable reconnection that does not fix the white screen narrows the root cause to a problem with the motherboard or the screen.
The only way to determine if the laptop screen turns white due to a motherboard problem is to test out a different, working LCD screen with the laptop. This requires the user connect the inverter board--the power supply for the LCD backlight--and the video cable to the test LCD. If the test LCD works with the motherboard, then the laptop's screen needs replacing; otherwise, a new motherboard is needed because there is no way to replace an integrated graphics card on a laptop motherboard.
Taking apart a laptop screen may make some users feel uncomfortable, so you can use an external monitor connected to the VGA port common to most laptops if the processor and hard drive still work fine. Using an external monitor requires finding the proper function key command to toggle between the LCD and external monitor.
Taking apart the LCD screen on a monitor likely voids any manufacturer's warranty. Consider visually checking the video connection to the laptop screen as a last resort if no other viable options exists. The service manual that came with your laptop likely offers some tips to disassembling the computer, or conditions that could void the warranty.
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