Editing Dell Latitude Black Screen

[title|Dell Latitude Black Screen] [summary]Does your Dell Latitude have a black screen? This problem page will go over several common occurrences when it comes to a Dell Latitude screen not turning on. The problem can be caused by either software or hardware causes, so read on to determine the right solution for you![/summary] [summary_image|2750887] == The Basics == It's easy to forget some troubleshooting basics amidst frustration. Before undertaking any more time-consuming solutions, here are a few fundamentals to get you started. * ***Turn up your brightness settings.*** Some Dell laptops have designated keys (or key combinations) to adjust the brightness. Look for a key with a sun icon on it (☼) and try pressing it. If pressing it alone doesn't work, use it in combination with Fn or Ctrl. * ***Perform a hard reset.*** Hold down the power button for a slow count of 15 seconds. After a few seconds, press the power button to boot up your laptop. * ***Connect or reconnect your charger. If you have access to multiple charging ports, outlets, and cables, try different combinations***. This helps rule out a faulty outlet, cable, or port, preventing a dead battery from receiving a charge. * ***Disconnect any peripherals.*** Docks or multi-port hubs are notoriously problematic, especially if many items are connected. [comment]solutions[/comment] == Incompatible or Buggy Application == Sometimes, the software controlling what's supposed to be on screen doesn't work properly. Any buggy or corrupt application could cause unexpected behavior. # If you think your laptop is turned on, press and hold the power button for 15 seconds to turn it off. # Press power again to turn your laptop back on and hold the ***F8*** key during the startup process to bring up Advanced Boot Options. # If nothing shows up onscreen for a minute or so, press ***four*** or ***F4*** (try both) to attempt to boot your computer into safe mode. ** If you get an image in safe mode, third-party applications or graphics drivers are most likely the cause of your black screen issues. ** Delete any applications you recently installed or updated. Restart your computer afterward to see if that fixed the problem. == Outdated or Damaged Graphics Drivers == Even if the applications are working correctly to show you a proper picture, if Windows's software to talk to the graphics processor isn't working, that won't do much good. * Return to safe mode using the above steps and try to [guide|104015|update your graphics drivers|new_window=true]. * This process varies a bit between hardware configurations and software versions, so try using the linked guide as a starting point. This guide only pulls from Microsoft-approved driver repositories and will only work if your Safe Mode instance has internet connectivity (it may not). ** The graphics card manufacturer will also have the drivers on their website. Check [link|https://www.amd.com/en/support|AMD|new_window=true], [link|https://www.intel.com/content/www/us/en/download-center/home.html|Intel|new_window=true], and [link|https://www.nvidia.com/download/index.aspx|NVIDIA|new_window=true] for current versions. ** Due to the potential lack of internet in Safe Mode, it is advisable to download the drivers on another device and move them via flash drive to your Dell Latitude. * If updating isn't resolved, try uninstalling. If you have access to another computer, [link|https://www.wagnardsoft.com/display-driver-uninstaller-DDU-|download DDU|new_window=true] and transfer it to your laptop in Safe Mode (which may not have access to the internet). Use it to uninstall the display driver. ** Uninstalling the device and driver in Device Manager might be enough to remove any problematic code, but DDU will do a more thorough job. * One last solution is to restart the explorer.exe process in the Task Manager. Press ***Ctrl*** + ***Shift*** + ***Esc*** to open Task Manager, then click the Details tab at the top of the window that pops up. Select ***explorer.exe*** from the list and click the ***End task*** button in the bottom right corner. If you can't get an image on the screen in safe mode (even after trying the above fixes in the First Steps section), you're likely experiencing a hardware problem. == Full Capacitors == Capacitors are tiny electrical power storage devices. Draining power from them alleviates prolonged issues. A hard reset is necessary to drain the capacitors fully. # To do this, remove the laptop's battery and all peripherals, including the charger. If your laptop battery is not easily removable, search our [[Topic:Dell Latitude|Dell Latitude repair guides|new_window=true]] for your exact model. # Once everything is removed, hold the ''power button'' down for 60 seconds. This causes the computer to attempt to power on and drain the capacitors, resulting in the built-up static charge. # Sometimes, you must unplug the BIOS (CMOS) and drain all the laptop's power. == Failed Battery == If your Latitude is not powering on or showing signs of life, the issue may be related to a degraded battery. While you should probably jump over to the [[Dell Latitude Will Not Turn On|Dell Latitude Won't Turn On]] page instead, we'd be remiss not to address it quickly here. If your device is showing signs of life, like status lights or beep codes, move on to the next solution instead. # ***Double-check Battery Level:*** We've already asked you to check your outlet and charging cable, but double-check them both now to be sure. Leave your computer plugged into your functional charging setup for 15-30 minutes to ensure your laptop doesn't power up from a dead battery. # ***Reset the Battery:*** On particular Latitude laptops, you can reset the battery by performing the following actions: ## Unplug the charging cable from the laptop. ## If your laptop has a removable battery, remove it from the laptop. ## Hold the ***power button*** for 30-60 seconds to discharge any remaining power. ## If you removed the battery, reinstall it. ## Plug in the charging cable. ## Power on the laptop. # ***Replace the Battery:*** If resetting the battery hasn't worked, and you aren't seeing any signs of life from your device, it's probably not turning on due to a faulty battery. Use the appropriate guide for your [[Topic:Dell Latitude|specific laptop]] to restore life to your device, and be sure to use the [parts|Dell Latitude|correct battery for your device|itemtype=batteries]. == Faulty Display == Your laptop could function, but the display is broken or disconnected. If your device can output a good image to an external display, it's a good indicator that the hardware is at fault. Before you go diving into the depths of your laptop's internals, try a quick video driver reset shortcut: * Press the ***Windows Key*** + ***Ctrl (Control)*** + ***Shift*** + ***B***. This works in Windows 7 and newer. If that didn't work, you can determine if you display is faulty by following these steps: * ***Inspect the built-in display for physical damage.*** This includes any cracks (yes, even minor ones) or any liquid damage. Checking from different angles and shining a flashlight onto the screen can help spot hairline cracks as they catch in the light. * If you can visually see any damage to your screen, the best solution is to [parts|Dell Latitude|replace it|itemtype=screens]. Use the [[Topic:Dell Latitude|device tree to find Guides]] for your specific device. If you can't find a guide for your model, try following one for a similar-looking device instead. Many are similar enough. == Display Cable Damage == In Latitudes where the display cable runs through the hinge (nearly all of them), the cables pinch in the hinge mechanism in certain circumstances. Repeat repeat wear against the edges of the housing, or a sudden pinch due to a sudden jolt could sever the cable. * Remove the display assembly and check for signs of exposed copper or tears in the cable, especially when it is close to the hing. * The webcam cable and Wi-Fi antennas also travel through the hinge. The display cable is often labeled on the board by its connector. Look for ones labeled eDP, JEDP, LVDS, or even simply display. Use [guide|25629|this guide for help recognizing cable connector types|new_window=true] * If the cable is damaged, replace it if you can. Depending on the model, replacing the entire display assembly may be required. == Malfunctioning Hardware == Beep codes and lights are used to diagnose issues computers have when booting. * With the laptop powered off, press the power button and listen for any beeping sounds or flashing lights on the side of the laptop. If there are any, document these beeps and light flashes (usually where the charging LEDs are) and visit [link|https://www.dell.com/support/kbdoc/en-us/000132041/understanding-beep-codes-on-a-dell-notebook-pc|Dell's beep code support page] to find the associated beep codes. This helps narrow down the issue. After rooting out the battery, charger, display, and software issues, the motherboard is the next likely culprit. * Check out our [parts|Dell Latitude|itemtype=motherboards] for your model and associated guide. Replacing the entire motherboard isn't always the best option, especially if your model is uncommon. == Motherboard Damage == What if Dell laptop still displays a black screen, even after following all the troubleshooting steps above. It's safe to say, clues point toward a motherboard problem. # ***Ensure that your device's CPU is adequately cooled.*** If you have recently reinstalled your [parts|Dell Latitude|heatsink|itemtype=heat_sinks], double-check that it is correctly attached to your CPU and that the CPU has the appropriate amount of thermal paste applied. Proper cooling is essential to prevent overheating and ensure optimal performance. Also ensure that your device's [parts|Dell Latitude|cooling fan|itemtype=fans] is plugged in and working and spinning freely in its housing. # ***Remove any accumulated dust or debris from your device's internal components.*** Maintaining proper airflow within your device is crucial. Dust or debris can hinder the cooling process, potentially causing issues with the operating system. Regularly cleaning your device's internals helps prevent excessive heat generation and ensures optimal performance. # ***Reset your device's BIOS Settings.*** To reset your motherboard's BIOS settings, you can try uninstalling and then reinstalling the CMOS battery. By doing so, any stored settings or configurations that may have become corrupted will be cleared, and the system will start with default settings. This helps eliminate potential conflicts or misconfigurations that could be causing the issue you're experiencing. # ***Perform a thorough visual inspection of the circuit boards for any signs of burns or damaged components.*** If you observe any visible damage, such as burns or parts that appear to be physically damaged, the board likely needs to be replaced, especially if it's the board carrying the display cable connector. You can find both [parts|Dell Latitude|motherboard|itemtype=motherboards] and [parts|Dell Latitude|daughterboard|itemtype=daughterboards] components for select Chromebook models in our store. [comment]conclusion[/comment] == Related Pages == * [[Dell Inspiron Will Not Turn On|Dell Inspiron Won’t Turn On|new_window=true]]