Toshiba produces laptops ranging from budget to high-end models, but like with any laptop, they can run into hardware problems. The display is one of the most important components on a Toshiba laptop, since it allows the user to interact with Windows. If your laptop screen is blank, the culprit can be either software or hardware-based.
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Glance closely at the screen to make sure the screen is completely blank. If you can still make out details such as desktop elements and the Start menu, the physical screen is still working fine. In this case, the screen's lighting components are faulty.
An inverter is a small component that converts power into a form which the display's backlighting system can use. This power is channelled to illuminate the screen, which makes it visible for the user. If the inverter is blown, the screen's backlight won't be lit, but a replacement can easily be purchased from a third-party vendor.
Along with an inverter, LCD displays also have internal light sources which make the laptop's display usable. If replacing the inverter fails to solve your laptop's display problems, you may have to turn to a third-party source. LCD lighting components are integrated directly into the screen, so the entire component will have to be replaced if the screen's lighting is faulty.
If you can hear your computer running while the Toshiba's screen is blank, give your laptop a quick hard reset. Hold down the "Power" button until the laptop's hard drive stops spinning. Wait for several seconds and turn the laptop back on again.
Similar to the restart process, putting the Toshiba into and out of sleep mode can reset the screen. If you can still hear the laptop running with a blank screen, close the lid and wait until the computer's hard drive stops spinning. Wait for a few seconds and reopen the computer.
If you can't see anything on the screen when the Toshiba is operating, it likely means that the entire component needs to be replaced. The physical display is connected to the Toshiba's motherboard by a single cable, and if no data is being transferred from the computer to the display, the screen can no longer be used.
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