Giant pixels, I need help

[monsuno]

Recently my computer has started displaying giant pixels anytime I want to start up a computer game like The Sims or Trickster. For a while I thought it was just 3-d games that were not working but then I tried playing a 2-d pixel game, and I had the same problom, here is a screen cap of what I am talking about.

The computer that I am running is a eMachines T3256.
It has a nvidia GeForce 4 MX graphics card.
Is there anyways that I could fix this with buying a nother card, or downloading something, or will I have to take my computer in to someone to fix it?

 

[CCT]

Re The Sims (original?) - your card should be able to play that

Re Trickster - your card doesn't support DX8 for 1.1 pixel shaders so probably cannot play that

Re the pixel problem - uninstall your present nVidia dtrivers in Add/Remove programs, reboot, and install the latest drivers.

edit: if the l;atest drivers don't fix it, uninstall them and try one of the 53.xx series - they apparently could, with hardware assisted software emulation, support vertex shader model 1.1.