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Hp elitebook g3 850 won' turn on,no beep, black screen

Hp elitebook g3 850
Microsoft Windows 10 (64-bit)
Hi,

My laptop turn on for less than 10 seconds then turn off ,screen remains black, i don't hear beeps , only shift lock and power button shows light
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Hp elitebook g3 850 won' turn on,no beep, black screen

Can you use a MultiMeter, to check the voltage & amperage being produced by the AC adapter?

 

Can you remove the battery, and then try to start-up your computer without it?

 

Do you have a friend with an identical computer, such that your battery can be placed into their computer, to see if it will accept a charge, and then return the battery to your computer, disconnect the AC adapter, and try to start-up your computer?

 

Or, take the computer to a computer store, and ask them to do that "battery-swap", as a trouble-shooting step?

 

If the above does not help, it could be the motherboard that has the problem.

Compare the price of a replacement motherboard with purchasing a replacement computer.

Factor-in the current age of the laptop.

If the current laptop is running Windows 7, you will need to purchase a new computer in January 2020 (16 months away) with Windows 10, after Microsoft terminates support for Windows 7.

 

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Hp elitebook g3 850 won' turn on,no beep, black screen

The laptop turns on sometimes , and sometiems the laptop turn on for 20 seconds and only power button and caps lock get lights

When the laptop turn on he works only for 2 to 3 days and the probleme comeback

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