|You deleted your video driver. The video driver allows the graphics processing unit on your video card to speed up Windows' GDI calls several thousand times. Without a video driver installed, the CPU has to tell the video card where to put each pixel, which results in choppy video playback and slow scrolling. |
Go to nVidia's website and download the latest drivers for your video card. If installing the video driver gives you problems (blue screens, lock-ups, etc), make sure that nothing in your computer is overclocked--especially the video card and AGP/PCIe bus.
Super PIII | Unlocked ES Tualatin @ 1.8GHz (150x12, 1.65v, 512K L2)
2GB PC2700 | 500GB | Radeon x1950Pro | Apollo Pro 266T | Win 7 Pro