Perhaps it will allow to determine which part is more likely to be damaged. I don't know if this information is useful in any way. once it goes dark the chance it will work for a long period decreases the longer the screen operates the higher the probability it will go dark the screen works longer (without interruptions that is) if the computer was off for some time The above factors are that we know at present for the Dell laptop black screen issue. Power supply problems: Your Dell laptop screen can turn black due to power supply issues too. I hope I manage to install a new tube and that I will get one which will exactly match my laptop.Īfter some further observations it seems that: Windows 10 installation issues: If the Windows 10 is not properly installed on the Dell computer, you will receive a Dell laptop black screen too. I only there was a way to distinguish a broken inverter from a broken backlight by just basing on observations. The LCD has been working fine for the last 5hours - not once did it go dark. When I phoned a shop to ask the cost of a new tube, I was told that the motherboard may also be faulty - the part which is responsible for turning on the display. If not then I will try replacing the inverter. I think I'll try replacing the backlight first. But after restarting the system or hibernating it everything works well again (for a while).Īny suggestions what may be causing such problems? Can this be the inverter? Or maybe the backlight tubes are worn out? It looks as if the backlight was not working. You can see the image if you look in bright light. This means that the problem is not caused by the OS or the drivers.Īfter examining the screen I noticed that it is not completely black.

I recovered my system using Norton Ghost and here is the next surprise the screen turned off while performing the recovery operation (this was under DOS). I then thought that maybe there is something wrong with my OS. I tried reinstalling the drivers but this did not help. And then after a couple more minutes the screen once again turned black. When I powered up the computer after hibernating it everything was back to normal. downloaded a lot of new drivers like dell system manager and tried so many things. To my surprise the Hibernation Screen appeared and was being displayed fine. Fixes for Laptop Keyboard Not Working Windows 10. My OS is configured to hibernate after pressing the main switch. Unfortunately after some time the screen went black once again. I thought this was an OS error and did a hard reset.

While I was working on my computer yesterday the screen suddenly went black. I have the following problem with my Dell e1705/9400.

Dell laptop backlight not working