My Display adapter only have 16 color.

Hello, and Welcome to D-A-L.

You should reload/reinstall the drivers for your display adapter.

If you don't know what adapter you have, download, install, and run Everest Home Edition on this machine. (Clean FreeWare) Once it's finished loading and running, look under Computer, Summary, Display, or under Display, PCI/AGP Video. This will tell you what display adapter/chip you have.

Post that information. (Video Adapter and 3D Accelerator.)