laptop crashes when plugged in works fine on battery

[Pat_6_]

I have an alienware 2012 M18 R2 laptop, recently the machine will just black out when plugged in to the power cable, it works fine on battery and charges fine with cable. but don't do anything or it will crash

 

[Laptop_Nerd]

Hi,

If I understand the issue correctly, your laptop crashes when you plug the AC adapter in. Here are some troubleshooting steps that may help.
- Start by testing the AC adapter if it's supplying the correct voltage in your laptop.
- Do also try a different AC adapter that has the same voltage with yours and see if the same problem will persist or not.
- Next is to do a clean install of the graphics card driver.
- Go to Device Manager and uninstall the Nvidia graphics card driver.
- Next is to open Programs and Features the uninstall anything related to Nvidia.
- Once done, download and install the latest driver.
- Here's the link: nvidia.com/Download/index.aspx
- Reboot the laptop after installing the latest driver.
- After the reboot set Nvidia as the default GPU and change the Power Management option as well.
- Here's how:
http/nvidia.custhelp.com/app/answers/detail/a_id/2615/~/how-do-i-customize-optimus-profiles-and-settings%3F
http/nvidia.custhelp.com/app/answers/detail/a_id/3130/~/setting-power-management-mode-from-adaptive-to-maximum-performance
- Do also make sure that you have the latest BIOS version installed.