Technical Support Dell Latitude 7390

Ahmad Safari

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Hello
This problem can be both software and hardware.
First, you have to change the version of the operating system, usually with Windows 7, this bug disappears, and in Windows 10, this is a common problem that the power option settings must be manipulated.
Check if the device works properly with Windows 7?

If it is a hardware problem, it can also be a non-original charger.
Also the failure of the BIOS program.
Also, the current draw of one of the parts and ICs on the board.
Usually, remove the ICs that do not have an effect on turning on and off, such as the sound, network, and USB ICs from the board and test them.
Sometimes this problem is due to a connection in the PCH chipset.
 
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