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Hello, first of all sorry for my bad English.

 

I have this Elitebook 8540w that suddenly shows this problem: when I try to power it up, the screen remains black and all the leds on the switch cover are active. The wireless and the power led on the front are also active, while the disk and electric connection led are off. The fan is active too.

 

This is what I tried:

 

- Power on with only the battery or the cable

- Reset the bios removing the RTC battery

- Change the RAM

- Remove the internal Sata disk

- Remove the battery and the cable, hold down the power button for one minute, and then install the battery and power up

 

None of these actions had some effect. What I should do?

 

Thanks

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