please help slove problem : " The X-server can not be started on display : 0"
 

History
PC did not boot. PC Repair Company checked it and there was a problem with the parts.
So they changed the parts(Main Board, Video Card(Graphic Card), and Serial Board).
After changed the parts, it booed normally on Windows, but this alarm occured when booting on Unix. "The X-server can not be started on display : 0"
What should I do for solve this problem?

Telling what Solaris version is installed, the references of the graphic card that was originally used and of the new one, and posting the X server error log file would be a good start.

You might need to install a new graphics driver.