E s430 GPU problem!!!!!

Question

Hello,
 i have a problem with my s430  gt 620m,  i cannot open the nvidia control panel. when i click it in the control panel, it
shows"You are not currently using a display attached to an Nvidia GPU".   in the begining , i thought it was the driver problem , so i download the newest driver from lenovo website and installed on my s430. hoever ,The problem not fixed
and  i sent it to the lenovo repair centre last week, they told me the error is not physical problem(the graphic card is ok ), and they re-image my hard drive  and told me problem fixed.
Today when i recieved my s430 , i was so upset, and disappointed with lenovo.  the problem is not fixed they just hide the icoin of nividia at the Notification Area Icons.  when i click the button in control panel .......................
anyway ,  can some one tell me how to fix this problem? the graphic card is identified by the laptop,  but i can't configure it through the nvidia control panel.
best regards
ps : is it possible to return this laptop , i really hate it now.

Answer 1

I think I might have the same problem. In my case, the Nvidia control panel does not open because Windows has deactivated the graphics card. I find this error message in the Device Manager:
Windows has stopped this device because it has reported problems. (Code 43)
The graphics card used to work fine until a recent Windows (8.1 64-bit) reinstall. I have tried many different drivers from Nvidia. Lenovo does not list the driver for this card in its support page.
Lenovo ThinkPad Edge s430 - Intel Core i5-3210M (3M Cache, 2.50 GHz), 1600x900 screen resolution, NVIDIA N13P-GLP Graphics 2GB, 8 GB DDR3, 500 GB HDD @ 7200 rpm, micro SSD 16 GB, Windows 8 Pro