Dell monitor backlight turns off. The switch is called electrical tape.

Dell monitor backlight turns off Sidenote: I get the black screen and it made me notice how the backlight bleed on my unit is pretty bad and it's noticeable even in a bright room should I ask Dell to replace it before my warranty expires? Many thanks! I’m using an M2 MacBook Pro connected via USB-C to my P3421W monitor - I’ll put the laptop to sleep, and then randomly throughout the night, the monitor’s backlight turns on and displays “searching for input” and then “going into standby” before turning black again. It's only the LCD backlit part that turns off, because you can still see that the screen is active when you shine a bright light on it. * Turn the monitor off * Disconnect all monitor cords from the PC * Disconnect the monitor power cord from the rear of the monitor * Press and hold the monitor power button The back of the monitor emits this cyan light. It Jul 30, 2025 · Change Backlit Timeout settings for Keyboard to stay always On, or change the time in Windows 11/10 Dell, ASUS, Lenovo, etc laptops. Keyboard backlight is found useful when we work in a dark room or in poor lighting conditions. This then became 10 to 20 times, and now trying this 50 or more times works not at all. New comments cannot be posted and votes cannot be cast. Laptop stays working fine with a secondary screen as well. 5 years. Dec 17, 2023 · The screen wont turn on (fan doesn’t start running) so it seems the laptop just won’t power on. Please help. If the LED is off, ensure that the monitor is powered on. The only way to get it to turn the backlight back on, is for the monitor power switch to be turned off and then back on. Aug 4, 2022 · G3223Q drivers Firmware M3T102, August 18, 2022 Fixes & Enhancements 1. Have tried different dp ports on the gpu. Seems to have started less than a year ago and is sporadic. When they press the power button the laptop keyboard lights up, but the screen remains blank. Oct 16, 2022 · G3223Q, turn off blue back light, my solution Hi, Though Dell claims the blue light cannot be turned off, I dare to differ. i would then have to keep turning it off and on until it didn’t flicker and stay on. Apr 21, 2018 · Dell U2413 turning off I recently bought a used Dell U2413 monitor. Follow easy steps for enabling and adjusting backlit settings on Dell laptops. Save battery and reduce distractions with simple settings tweaks. It appears that this has to do with some Intel 'automatic' power management (Adaptive Brightness) that somehow believes that just because more pixels are 'white' that somehow corresponds to a need to envoke some power saving in the backlight LEDs. Sep 10, 2006 · I plug it in, the dell logo and test pattern come up for a second and the backlight turns off. ive only had this for about a year now it its been bothering me for a while now maybe since july. Sep 26, 2024 · If your Dell monitor is flickering or blinking, it can be both annoying and disruptive. But I don’t know how. I've noticed, that sometimes backlight of my monitor turns off on certain mode changes. Sometimes it turns off when Window Aug 9, 2004 · Also if you have an external monitor loaded and you close the lid the external monitor will turn off and on again (which shouldn't happen). Edit: fixed it by unplugging it for 20 seconds. It is just a matter of bad drivers or configuration of the drivers. My keyboard lights up when I hold the power button for 15-20 seconds, but other than that, there is nothing happening. Improve HDR performance 2. Starting on page 39, it discusses AlienFX Lighting and Zone 4: Power Button and changing its color. Follow the steps outlined in this article when you are having issues controlling the lighting on your Alienware device. Apr 22, 2025 · This article provides information about how to identify and troubleshoot light leakage or backlight bleeding on any Dell monitor. Dec 28, 2020 · Anyway, ever since I got this monitor, I can't seem to keep it in standby, always when the pc is turned off, the backlight keeps coming on, even removing the power cord from my pc's power supply does not solve this, I have to either turn the monitor off or remove the dp cable.  When it goes to sleep, the vast majority of the time the backlight stays on. Mar 29, 2022 · When the backlight turns off, any image on the laptop screen will be extremely difficult to see. It takes me unplugging the power to it, th Maybe you can disable this in the Service Menu (DCR) but I had no luck, it turned the backlight off instead. Turning it off and on again works on mine, but YMMV Jun 18, 2007 · Hey all -- I'm having an issue with my E1505 where my screen backlight will not turn off when I close it. AW2721D offers a couple of preset modes, including FPS (First-Person Shooter), MOBA/RTS (Real-Time Strategy), RPG (Role-Playing Game), SPORTS (Racing) and three customizable game modes for user's own preference. If I switch the display mode to Duplicate or Extend (just to turn on the laptop screen) and switch back to Second Monitor Only, the laptop screen can turn off completely. Jan 8, 2004 · Under AC power, it will post through the Dell/Bios screen, then the backlight turns off. That is that from time to time after they go into sleep mode (from closing the li Jul 3, 2020 · The P2715Q (2 year warranty expired on December 11, 2018) turns on its backlight and displays 'entering power save mode' and immediately turns off every 30 seconds or so. Hold down the "D" key, push the power button, release the power button, wait 2-3 seconds and release the "D" key The laptop should go through an LCD test of solid White, Red, Green, Blue and Black 2 or 3 times. If you have sensitive eyes, you might have noticed that the laptop screen 'dims' when 'bright' windows are displayed on the screen. Tapping the wrist pad changes the intensity, however the light keeps randomly dimming, getting brighter on and off at random. Thanks for any assistance. There is no content anymore but the back light is still on. I have 2 computers attached (new HP laptop and 2013 MacBook Air) and w Jul 4, 2025 · Dell XPS 13 9310 - display (backlit) turns off at 90 degrees Hi, I have a Dell XPS 13 9310 and the display turns off when opened more than 90 degrees. Here’s a comprehensive guide to help you troubleshoot and potentially resolve this problem. Jul 30, 2025 · Dell monitor not turning on? Discover troubleshooting steps for intermittent power issues or an off LED. Find solutions ranging from cable issues to power settings and overheating. It is very annoying. I tried resetting the monitor and that didn't s Oct 24, 2014 · Every once in a while, the back light will light up for a second and then shut back off. I thought I would share how to stop this monitor from having the backlight flicker or flashing. But the backlight turns off after a few seconds of inactivity which results in you searching for a button to type. Hope it helps K Mar 5, 2023 · People also look for keyboard backlight settings in various laptops, especially Dell, to work in dim environments. It's on for a few seconds, the off for a long time. This can be important on mobile computers running off the battery. Same firmware version M3T101 on both but still no option I can see to control their ON/OFF state. The latest Jun 26, 2025 · What to do when your Dell laptop's screen doesn't turn on What do you do if you've powered on your Dell laptop but the screen is black? Fortunately, there are simple troubleshooting steps you can use to fix your Dell laptop's black screen Dec 13, 2024 · alienware monitor turns off while turning on so when i first start up my pc my monitor will turn on but will start to flicker and then turn off. The aim is to automatically reduce the backlight brightness while maintaining good visuals on-screen. The screen stays black but the backlight turns on and does not turn off itself unless I press the power button. Mar 22, 2022 · Even when the backlight is switched off via the button on f10. I would only add that at the beginning, I could correct the problem by turning the monitors off and on a couple of times. Make sure the battery is fully charged. Jun 18, 2017 · The problem is that I DID turn off Deep sleep mode, and now the monitor's backlit won't turn off, regardless of how long I let it sit for. anyone know how to turn off the back light of the dell s2721dgf monitor? : r/Monitors r/Monitors Current search is within r/Monitors Remove r/Monitors filter and expand search to all of Reddit r/Monitors Dec 19, 2015 · After boot logo disappears, external monitor turns on, and laptop screen turns off - but not completely. I'm almost always plugged in and typically don't close the lid, but the symptoms are the same (black screen, keyboard lights on, must hold the power button to power off and then back on). The only indication that the monitor was switched on was the white power LED on the bottom and the USB keyboard/mouse powered from the USB ports. Oct 30, 2023 · Hey Dell team,  Yesterday my Dell s2721dgf monitor wasn't waking up when I powered on my PC. Jan 5, 2021 · HI All,   attempting to fire up my Latitude 5500 after the holiday break, and it wont turn on? when i push the power button, the keyboard backlight flashes once and then nothing happens? no ot Nov 20, 2019 · If I move the screen inwards the screen turns blank and the keyboard backlight stays on. This is with the computer Jan 13, 2020 · Per the sticky up top, " FAQ Alienware Monitors ", I clicked the AW3420DW Documents, then the User's Guide. Apr 15, 2019 · I bought a Dell U2718Q Monitor couple months back and about couple of weeks ago one of the LED backlight started to turning on and off suddenly. Jul 20, 2022 · Skip to the bottom for the solution. From the OSD, I'm able to turn off the LED on the power button, but I'm missing how to turn off the light on the back. You must input your Service tag or Monitor model number to obtain the Product Manual. com, even if it is a "budget" gaming monitor. I have a few users that use the Dell XPS 13 9365 model. It’s position may change acc Aug 12, 2025 · This video guides you through troubleshooting your Dell laptop's backlit keyboard, including updating BIOS and adjusting settings to turn on or adjust the keyboard's backlight. Oct 29, 2006 · I have a Dell 15 inch LCD monitor that comes on for 2 seconds, then goes black. It s turning on and off  itself , 1 time each 3. May 3, 2022 · Update: I have used my Latitude 7490 without the Logitech mouse and keyboard connected, and have noticed my keyboard lights still turn on randomly when it shouldn't be on. No amount of messing with the power button would wake it. Can you Dell monitor not turning on? Discover troubleshooting steps for intermittent power issues or an off LED.   The laptop is Latitude 5590. Archived post. Discover why your computer powers on but the screen stays off and how to resolve it. Recently, whenever my computer is asleep the AW3418DW will turn randomly turn on after a few hours. When I plug the monitor into a Windows-based laptop via HDMI, the laptop screen begins to flash on and off continually, but the Dell monitor never produces a display. Apr 7, 2025 · This video will demonstrate the how to turn on or off backlight for keyboard and enable or disable in bios. Now (middle of June), one of the U2717D just randomly turns off. Dell P1914S 19" IPS Led Monitor - Turning On Backlight Led Off - Display Show - Backlight Repair Info topic 14. If not, confirm that the monitor is receiving power by observing the power LED. 1K subscribers Subscribed Apr 24, 2013 · Hello, I have new U2312HM, connected to HP dock station with DVI cable. Sep 7, 2025 · Strategies for troubleshooting when your computer monitor turns off unexpectedly. All were working fine within my initial use, though a few days after, the monitor started to turn itself off randomly within half an hour to an hour of use-- no power led, and would turn back on after a couple of minutes. Since the monitors are in my room you can see how this is troublesome for sleeping. If this is happening to you, here is something to try. If I go to press the power button off and then on, the power light indicator will not come back on. If i hold a flashlight up to it i can see the image on the screen. After a while, I tried that again and this time it actually worked: the laptop turned on, but the screen didn't, or rather, the backlight didn't. 5 minutes , with no reason it seems. The computer is still running and i can connect an external monitor to do my work. Nov 28, 2018 · Hello everyone, This is a solution post rather than a problem post. Recently (the last year or so) the backlight of the monitor seems to turn off randomly. Note, I am not sure if these AlienFX Lighting changes "apply" when the AW3420DW goes into Aug 19, 2025 · User may report that their monitor encounters monitor display intermittently flickers, V-line issue, resolution is blurry, or video blanking issue after extended use. The above occurs whether I have the monitor plugged into a computer or not. This would be acceptable if the small bit of bleed had remained the same but what I see now is worse compared to images of the product on professional review sites like RTINGS. To Turn On / Turn Off or To Fix Backlit Keyboard on Dell Laptops Try these methods: Method 1: First of all, locate the key with the ‘keyboard illumination icon’. The screen is black (like power off black, not no-signal black) and the white power light is on. Updating the Alienware Command Center to the latest version resolves many issues. 10-15 seconds is by far too short for me. Turning the monitor on and off and restarting the PC did not help. The switch is called electrical tape. While browsing it's so annoying as it happends all the time. At this time I wasn't even to turn off it by pressing the on/off switch on the back. Note: I couldn’t find anything in the manual that could fix my problem. Also, It will Apr 29, 2020 · My Dell has a great keyboard's backlight feature, but it turns it off after only 10 seconds since last key is pressed. Learn how to turn on a backlit keyboard, keep keyboard backlight off, and troubleshoot common issues like keyboard illumination not working. Follow the steps for your Windows 10 or 11 system to turn off adaptive brightness and manually adjust screen brightness and control brightness settings. This problem, where the screen remains dark even though the keyboard is lit, indicates a hardware or software failure. Purchased two on sale for a dual screen setup which arrived today. Jun 14, 2014 · The issues are: 1. Open the AlienFX Lighting and see if Off or Black is listed as Color for Zone 4: Power Button. After completion it should try to automatically boot 2 or 3 times Feb 9, 2022 · AW3418DW, backlight not turning completely off I have had an Alienware AW3418DW monitor for a few years now. Jun 29, 2019 · Hello all, Need your assistance with a recently noticed issue with my Latitude E5570, where the laptop screen turns off when I unplug it. Added OSD option to turn On or Off the lighting at the back of monitor Jul 21, 2025 · If your Windows laptop backlight remains Always on, even after turning off your laptop, the suggestions provided in this article will help you. While my computer is on 24/7, my display does not get used more than 8h every work day, and it goes into backlight off after one minute of no use (confirmed by having the power LED switch to slowly blinking mode). In this guide, we will explore the various reasons why your Dell laptop Jun 19, 2018 · Good day, Sometimes I need to swith off my display on laptop, on some models there is button wich working in combination   FN + random F, F9 for example But I got keyboard like this https://3d Jun 14, 2004 · I have had a Dell 2000FP Monitor for about 2. If the issue started after a recent update Nov 13, 2025 · Learn how to turn on a backlit keyboard, keep keyboard backlight off, and troubleshoot common issues like keyboard illumination not working. The failure symptom improves if the user turns off the monitor for a couple of minutes then turns on again. Jan 10, 2010 · E228WFP Backlight Issue (Turns off every 5 - 10 mins or less) Group Thread hey everyone, I thought it'd be nice if we could have a list of everyone who is having this issue, but is beyond the warranty ending period. Dec 26, 2023 · My main monitor, a Dell S2721DGF which is a year old randomly shows a black screen with a power light and no OSD after starting up my PC or rebooting. How to turn it off? Sep 16, 2025 · For step-by-step instructions on how to reset a Dell monitor to factory default settings, browse to the Dell Product Manuals page to obtain the manual for your monitor. Apr 5, 2024 · Turning off G-Sync Turning off HDR Leaving the system and monitors alone and unpowered for 12 hours Re-seating DisplayPort plug on graphics card and monitor Trying different DisplayPort plugs on my graphics card Any advice on how to fix this problem would be appreciated. That monitor also would go into sleep mode, but the backlight would stay on displaying a black screen which is very possibly what's happening with the AW3423DW, there's just no backlight so the screen appears black but is still on. Added Custom Color Settings for HDR 3. Jan 14, 2021 · I have the Dell XPS 15 9500 and I'd like to know if there's some shortcut to toggle the LCD on and off? Most laptops have that or have the minimum brightness possible set to 0 (instead of 10%). Dec 21, 2010 · Monitor goes black after a few seconds. I have verified the lid switch works by changing the power settings to put the laptop in st May 15, 2024 · Learn how to easily turn off your keyboard light in Windows 11 with this step-by-step guide. I took around into the options of the monitor and I can only turn off the light whenever the monitor is on and is receiving signal. This issue started shortly after replacing my failing PSU with a Thermaltake Jan 5, 2022 · Turning g-sync on/off doesnt affect the flickering either although Dell reccomended to have it on only in games that support it. If I turn it on and off, it will come back for two seconds then go black where it is only visible with a flashlight Sep 18, 2022 · I had a similar issue with my last monitor, a Dell S3220DGF. Jan 4, 2006 · Now when starting the computer, the backlight of the video will turn on for one second and then turns off. Flickering screens can be caused by a variety of factors, ranging from simple connection issues to more complex hardware failures. Tips for finding the Service tag or Monitor model number. They have had problems turning them on from sleep or even a completely powered off state. Also, maybe someone can suggest a fix that is cheap/easy (doesn't necessitate buying a new monitor). I have connected it to a external monitor and it displays okay on the external monitor. Use the model number noted before. When Deep sleep mode is on, the backlit turns off when I turn the computer off. Dec 13, 2015 · To summarize how the monitor is acting: when I plug in the monitor, the power light will come on, but no images will appear on the monitor, and the blacklight does not turn on - just a powerless screen. Whats worse is that it happens in groups. I tried resetting the monitor and that didn't solve the problem. But, the laptop is booting all the way into Windows! Occassionaly after the Dell screen I will get a couple of flickers of life in the LCD at the safe mode screen (from shutting of 98se via power button) I had replaced the Video Board thinking it went bad, but it's the same exact symptoms. This occurs after displaying the MSI logo and the PC POSTs. 5 full days. Dec 11, 2008 · Chris - I have have the same problem as GMBAyer, except that as a dual screen user I unfortunately bought two Dell LCD Monitors, model A201 P1-T03, and they both have gone out. To resolve this I have to restart the monitor using the power button, which in turn will not respond right away, but will keep me waiting for 6-10 sec before the monitor will finally turn off. There does not Apr 15, 2019 · Hi, I bought a Dell U2718Q Monitor couple months back and about couple of weeks ago one of the LED backlight started to turning on and off suddenly. Learn how to check cable connections, test power outlets, and more to resolve power problems. The laptop continues running with no other perceivable prob Feb 23, 2008 · Second, if plugging in the power adapter, while on battery, caused the units screen to go black, it's an indication that the typically higher power draw, for a brighter screen in adapter power mode, stresses the inverter, causing it to breakdown and turn off the backlight bulb. Jul 19, 2012 · If, when the screen dims, you can see a very faint image of what should be clearly visible then the backlight failing is the most likely cause and the behaviour your describe (being on for a short time) points at the inverter being to blame. Thanks, Dell tech support! Sep 30, 2023 · A black or blank screen when your Dell laptop’s keyboard lights up is a common issue with several potential causes. Added Console to use its own tone map via Source Tone Map 4. In addition, key enhanced gaming features such as Timer, Frame Rate, and Display Alignment are provided to help improve gamer's performance and provide best-in game advantage. Anywa Aug 27, 2010 · hi, this lcd monitor samsung syncmaster 931sw (19 inches) show the picture normally (of seven or snowleopard) for 2 sec then turns black , if you look at a certain angle you see that the picture is still there but as if there was no backlight anymore is there something i could do to repair it? Feb 17, 2021 · When I keep my computer running but I'm not there (typically keep it running while watching a movie from it in another room) and turn off the monitor by the button, eventually it turns itself on with a black screen and backlight on. Update = I do not observe the problem when the wireless mouse receiver is removed. I have a dell S3422DWG monitor and it suddenly stopped working after my pc went into sleep mode. Screen will go blank (black screen with backlight still on) or it will freeze randomly. I have dell u2520d and everything is great except for the fact that when the monitor gets no signal when my computer is sleeping, the power button lights flash. I also don't want Oct 3, 2021 · Welcome to the Dell Community @Rishabh aggarwal If you mean that the system turns off after 2 seconds then try this. There could also be a faulty connection between the monitor and the screen. I plug it into my comptuer to test it anyways, it comes back up for a second and then the back light goes out again. I bought this monitor for the curve, 32", 4K, and the color for Jan 4, 2021 · I recently purchased a Dell U4320Q monitor. put the magnet on the switch and the screen remains off and keyboard backlight turns off. Fix common monitor issues like no video, black screens, or no display. com Jul 28, 2025 · How to Fix Laptop Screen Backlight Not Turning Off Address persistent laptop backlight issues by diagnosing hardware faults, updating firmware, and adjusting power settings for a complete screen shutdown. Take the PC out of the monitor troubleshooting equation. This is how you can restore it if you accidentally disable it in the Service Menu! Jun 15, 2018 · Hi All,  I have one problem with the backlight keyboard. It is a relatively common way for an LCD monitor to misfunction. During the day it get’s a little distracting, so I want to to turn it off. Then when I remove the magnet, the keyboard backlight turns on and the screen dimly flickers trying to turn on it seems but just doesnt. Mar 6, 2025 · Every month or so my monitor will just go black in the middle of use. Feb 2, 2023 · I have several Dells, latitude's, vostro's and inspiron's, and there seems to be a common problem with all of them. Does this happen to anyone too? I have updated to the latest firmware but the issue persists. If the monitor passes the Self-Test Feature Check (STFC), then the culprit is the video card driver or the video card itself. Jun 23, 2018 · I purchased two (excellent) Dell U2717D Infinity edge Ultra Sharp monitors in April 2018. Nov 13, 2025 · Alienware FX is an application that is integrated into the Alienware Command Center that allows you to control the lighting on the chassis, keyboard, and mouse of Alienware products. If your Dell laptop screen backlight turns off, turn off the power-saving settings. There is no picture on the screen at all and the light on the monitor stays green. Jun 16, 2020 · Inspiron 7786 2-in-1, same problem. In Dell PremierColor, I turned off the power saving functions but still experience this. See full list on superuser. Computer is starting an just before the Login window appears, the backlight will turn on for another second and then turn off again. Jun 26, 2022 · G3223D, turn off blue rear LED? I can't seem to find out how to turn off the blue LED on the back of this monitor. . Does the monitor keeps any setting while the pc is off? Why did the flickering continue when the pc was disconnected? My LG monitor does this as well from time to time. Under a lamp, I was able to see that the screen (the LCD) still worked, and actually the whole device did, except for the screen backlight. Aug 23, 2016 · Hello, I have an acer aspire E5 and its screen became faulty so I bought 1 and replaced it, made a factory reset and re-installed windows only to find that the screen works perfectly only when the brightness is set to max when i try to decrease the brightness the back-light shuts off Learn how to turn on a backlit keyboard, keep keyboard backlight off, and troubleshoot common issues like keyboard illumination not working. Sep 11, 2017 · Additionally, over the course of at most 24 days, backlight has supposedly been on for 540 hours, or 540/24=22. Only the backlight turns on but the screen doesn’t display anything. While frustrating, the issue can often be resolved through some troubleshooting steps. Apr 29, 2025 · A dim screen can be caused by adaptive brightness settings. Feb 22, 2024 · Just got this monitor, when i switch browser page to more white the monitor screen lightens up. Sometimes when I put my mac into sleep I noticed that the Dell monitor will not turn off completely, it has backlight emit as shown in the image. The blue backlight works on one but not on the other. When you shine a light on to the display you can see that it is on. (just like the ebay guy said it would). The only solution I've found is Mar 7, 2024 · Dell's warranty information states that some backlight bleed is normal and an acceptable result of the manufacturing process. LCD Tip If the backlight is disabled, you can shine a flashlight at a specific angle to make out basic shapes in part of the screen. Jun 17, 2025 · The latest version of Alienware Command Center does not offer the Go Dark and Go Dim commands that were available in previous releases. Removing all cables and power cycling won't turn on the backlight or make the OSD menu pop up. Sep 16, 2021 · Display blacklight turns off Hi I have a XPS 13 9380 touch screen, the backlight for the display turns off and it wont turn back on until I restart the laptop. Is Jul 31, 2025 · What does this mean? Intel DPST controls the LCD backlight, by reducing the backlight as needed they can save power. May 5, 2025 · If the monitor displays a no VGA, DVI, or HDMI cable message, the monitor has passed the Built-In Self-Test, and you may have to troubleshoot your computer. mine bglwk mxigcchmk ogdq mtzbpp vegcwhk znda hxkv nwmqr szpvv tqlxr wzyc nvd rsmxu sarnr