7 series are old enough, my card is as ancient as yours. Few newer drivers would give them full function and most of them not.
I had tested almost every Nvidia driver for Windows 7 from 170.xx to the newest 197.25, and only three ones' digital vibrance and image sharpening options would function normally: 174.55, 191.66, and 195.62. And you're adviced to try 191.66 firstly.
1. Download Nvidia Driver 191.66 Windows 7 x86 here
, (your ram is 2 GB, I guess your OS should
2. Extract the downloaded file and rename the file folder as Nvidia 191.66 Windows 7 x86 .
3. Download the Modified Inf. file there, then move and replace the nv_disp.inf
file to your
Nvidia 191.66 Windows 7 x86 file folder.
Please tell if that driver works or not after testing.