Start up problem

[farshid to]

Hello, I have a Dell 7405 laptop with Windows 11 installed.After a while of using it and restarting, when I turn it on, Windows loads and then shuts down completely after 30 seconds. This happens every time I turn it on, and the system shuts down completely.Even when I remove the battery, it still shuts down after 30 seconds.To fix the problem, I completely replaced the system power supply, but the problem was not solved.I removed the BIOS battery, but the problem was not solved.Even after entering the BIOS, the system shuts down after 30 seconds, so I can't even reinstall Windows.But when I r

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