HP EliteBook 840 G1 is not turning off

[shanchya]

Today I have found hardware level problem with one of our HP EliteBook 840 G1. User is unable to shut down the laptop. Once the shutdown command is given to the system, it turns off, but the cooling fan starts running at its maximum speed and the Wi-Fi indicator and HDD indicator (LED) both turns into amber color. I have tried to shut down the system by holding on the power button for some time, and it shuts down normally, and again having the same problem (the cooling fan starts running at its maximum speed and the Wi-Fi indicator and HDD indicator (LED) both turns into amber color).
I try to run the system without the battery unit and also try to run the system with the battery unit (without AC Power), but the problem remains unchanged.
I have also try to reset the BIOS (from Factory Default Settings and unplugging the CMOS Battery) but the problem remain unchanged.
Please Help ........

 

[zer0c00l587]

From what i have read, you must turn off LAN/WAN switching in the bios, especially on windows 7.

 

[zer0c00l587]

Also turn off sleep mode, try allowing only screen turning off in unattended situations, since it may freeze when waking.

 

[shanchya]

From what i have read, you must turn off LAN/WAN switching in the bios, especially on windows 7.

Thank you for the response. But shouldn't is be as default when i set the BIOS restore to factory default mode or unplugging the CMOS battery ?

 

[zer0c00l587]

I dont own this model laptop, so i dont know its default bios settings as i said i have read on forums the lan/wan settings must be off, so get into your bios and check if thats the case then switch off and test.