Good day! im having a serious problem about my laptop. last week, my laptop is doing fine. and i tried to restore it 2x because of application problems. then after the 2nd restore, my nvidia says no gpu attached when i try to open control panel. i decided to reformat my laptop and installed all the latest drivers but the problem stll occurs. but when i check on dxdiag, it detects the videocard but the 3d acceleration is disabled. then on device manager, it also detects gtx 860m. but on nvidia control panel and geforce experience, it doesnt detect my videocard. please help me.thank you!.