My Nvidia graphic card is not detected

[HuruHara]

As the title above, my gpu is not detected in device manager, and i can't found it in bios either.
Laptop spec : Asus A55V, nVidia geforce 610m, i3 2.40Ghz

Tried:
-uninstalling & installing the driver
-uninstalling & installing in safe mode
-clean install windows

Screenshot is included, any help from expert would be appreciated.

 

[RoasterMen]

Check if your power plan is on Power Saver by going to Control Panel>Hardware and Sound>Power Options>Then click on the arrow on the right side of the ''Show Additional Plans''. When it is enabled, choose either Balanced or High Performance Mode(Warning: Battery Life may become shorter on this plan.).

 

[HuruHara]

tried that and it doesn't have to do with the problem. any other way? thanks

 

[whs]

Check the setting in the BIOS.