and suggest you go to this link and download the drivers and re-install them for the card.
http://www.msi.com/product/vga/N520GT-MD1GD3-LP.html
If the new drivers do not work or even before trying new drivers check to see that the keyboard is still completely and firmly plugged into its connector (PS/2 or USB as the case may be) as intermittent contact could also cause such anomalies.
I bought and installed a new graphics card yesterday and well now my keyboard is being a pain in the ***.
When ever I type that line that blinks gets all messed up when deleting words or typing too fast.
image here
http://i44.tinypic.com/33vp653.jpg
my productivity sucks now and im going to pull my hair out.
I checked the driver and it says installed correctly.
It is an MSI N520GT MDIGD3
1204 DDR3
PCI Express
Thanks for the help!

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