Hi Lanren,

> Why MOI3D V3 do not display properly, appear in a short while disappear for a while,
> the computer system is Windows 7 X64

Sounds like it could possibly be a video driver problem, try updating to the latest version of the video driver from the video card's manufacturer.

Also make sure you're not running any "cracked" version of MoI, that can have side effects like you're describing too.

- Michael