Why does the laptop screen turn off when charging is connected? Laptop turns off when power is connected
After installing the operating system, users of Windows 7 and higher may encounter a problem where the laptop screen goes blank when the charger is connected and disconnected. However, here it is worth distinguishing between the symptoms when the screen goes dark for just a few seconds, but the system continues to work, and when the screen becomes dark and the desktop is difficult to see. Therefore, we will consider examples of solving each problem separately.
Screen goes blank when charging is disconnected/connected
If you have recently reinstalled operating system and encountered a problem when the laptop screen was Intel processor goes out when connected to charging (or when disconnected), then you should perform the following steps:
- Open the Intel HD Graphics Control Panel. Select the “Power Options” section.
- In the “Switching screen refresh rate” section, set it to “Disable”.
- Next, select the “Powered from the network” plan.
It is worth noting that this problem is associated with switching graphics display modes. Therefore, to prevent the screen from going dark, you should disable this switching.
You can also try resetting your power settings. To do this, go to the “Control Panel”, select “Power Options”. Next, select “Power plan settings.”
Select “Restore plan settings to default.”
Save the changes.
The laptop screen goes dark when charging is connected, but the desktop is barely visible
This problem is related to the BIOS settings. To solve it you should do the following:
- When you turn on the laptop, press “F2” several times to get into the BIOS.
- Then go to the “Main” tab and look for the line “Graphic mode” or “Graphic device”. Click “Enter”. Set the value to “Descrete”.
- Click “F10” to save the result.
It is also worth rolling back the video card drivers if such an error occurs for no reason after turning on the computer again.
Some laptop owners may encounter a situation where the device display darkens when connecting the power adapter. Someone solves this problem by sending the laptop to a service center, without even suspecting that it can often be solved by yourself in just a few minutes, the main thing is to determine the cause of this phenomenon.
Incorrect power settings
Quite often, users ask the question: why does the laptop screen darken when charging after updating the OS? The answer may be the fact that during the update process, the laptop's power settings can be set in an arbitrary manner, which, in turn, will lead to battery saving when connecting the power adapter. This problem is solved as follows:
- On the laptop battery icon, which is located on the taskbar, right-click and select context menu"Power supply."
- On the right side of the window, select “Settings to turn off the display,” then “Change advanced power settings.”
- Scroll the menu to the “Screen” item and select the “Screen brightness” sub-item. Two brightness values will appear: when running on battery power and when running on mains power. The value of the second indicator, that is, when the charger is connected, should be set to a level acceptable to you, for example, 100% - this means that when connected to the network, the brightness of the display will increase to maximum levels.
It is also worth checking the adaptive brightness setting - if it is set in such a way that when you connect the laptop to the network it is activated, then this may be the reason why the screen darkens if there is enough light in the room high level illumination
After that, click the "OK" button to save the settings.
Setting up the BIOS
Another common reason why a laptop screen may go dark while charging is the BIOS settings that control the operation of the video adapter. To change them, when turning on the device, you need to hold down F2 or Del, and then, in the opened BIOS, do the following:
- Select the “Main” tab, in which find the line “Graphic mode” or “Graphic device”.
- Press the “Enter” key on it, and select “Discrete” in the context menu that appears.
- After that, press the F10 button and save your changes.
Video card software problem
Modern laptops usually have two video cards - integrated and discrete. Discrete displays an image on the screen while performing everyday tasks, such as using various programs, watching videos, and so on. The integrated one, in turn, is responsible for image processing when running “demanding” 3-D applications, such as computer games.
Each video adapter has its own driver and, as often happens, during next update system, the driver is installed correctly on a discrete video card, but not on an integrated one. In this case, if the appropriate settings are set on the laptop, when the integrated video card is turned on when powered from the network, various problems with the operation of the display may appear, in particular, its dimming. Of course, you can change the parameters in the power settings so that the discrete video card continues to work when powered from the network, but it will not differ in performance, moreover, its service life will be significantly reduced.
This problem can be solved by rolling back the system to a state where all components worked correctly. For this:
- Go to “Control Panel” and find the “Recovery” section.
- Select “Run System Restore”, wait until the system prepares for the operation and click “Next”.
- A list of points will open in front of you, indicating the date and time of creation. Having selected a point during the creation of which your computer worked properly, you need to click “Next” and then “Finish” to begin the operation.
Upon completion of the process, incorrect installed drivers will be removed and the screen dimming issue when connected to a laptop charger should be resolved.
If all else fails
If after following the above methods, the answer to the question “why is the laptop screen darker when charging” is not found, and the display continues to darken when connected to charger, most likely there are problems with the hardware component of the device. In this case, if you do not have the appropriate knowledge and skills, it is best to take the laptop to a service center.
Similar problem with MS-1761. Switches off under load.
Lowering the voltage on the video card (570M) from 0.81V to 0.80V did not help. (or rather it helped, but partially - the laptop still turns off sooner or later).
It also partially helps to dance with a tambourine through a power plan in which in the section: "processor power management" we put in the menu: " maximum state processor" value is less than 100% (even with a value of 99% shutdowns become less).
Well, of course, you can lower the frequencies on the video card itself, but here other rake comes out in the form of switching from 3D Mode to 2D, in which, most likely, somehow the 2D mode gets stuck and when you switch to 3D mode again, the FPS drops significantly. A simple example - this is a combination of alt+tab from the game to the desktop and back. But sagging does not always happen, but according to a random principle, you can return the situation by increasing the frequencies on the video card to factory or close to them, and then again to the reduced frequencies at which the laptop worked stably, but this does not always work, and not the first time, but often when the normal number of FPS is resumed, at low frequencies, after all these actions the laptop is cut off again.
I also noticed that the THRM sensor on the motherboard(this is most likely one of the bridges). I don’t remember the exact chronology after which it started to warm up, but the temperature can reach 89 degrees or higher, after which the laptop naturally turns off (I was just lucky to see this temperature several times before shutting down). And it heats up regardless of whether the laptop is powered from the battery or from the mains. (I turn on the laptop on the battery, launch a browser with many windows and voila I see on the sensor a temperature close to boiling water while the windows are loading, then the temperature drops but still remains around 70-75 degrees)
Just today I tried to change the processor. My 2720M on 2760QM and there were significantly fewer shutdowns, I never got to see them disassembled, and when I assembled them they appeared again, but this time it’s enough to lower the maximum processor state to 98% and everything works stably even at the factory settings of the video card frequencies (with low voltage)
As a result, I am interested in the opinion of what is still wrong here:
_chipset (after disassembling it, I saw a pathetic semblance of a radiator made from a piece of thin metal, but replacing it with a normal radiator did not help)
_power control unit (with the battery disconnected, it can sometimes turn off if you pull the power plug in the laptop socket)
_video card (in service center There is no need to replace the video card to test it, in appearance there are no signs of physical defects as a result of overheating or any other influences. At the very beginning of the problems there were minor artifacts, but then they disappeared and do not appear again)
_processor (which is unlikely since the new one was still turned off)
_a complex problem involving several components
I have my eye on a 675M video card, judging by several messages on this forum and others, it should be suitable since it is also based on the Fermi family, but the Americans (I took the laptop from them) answered that the maximum possible video card is the same 570 because for 580 you need more food, and they didn’t even talk about the next generations.
So, is it possible to take this video card (675M) that was removed from the MS-1762 (MSI GT 70) for installation in my MS-1761?
I would be grateful for any answers in essence, since I have already “swinged” at fighting with my laptop. No strength.
