all thing is ok. I unplug all and check it. when I press the power button windows start normally. it scan drive D. When finished the scan it was hang. no welcome screen or user screen appear. Whant can I do now?

Probably time to run chkdsk /r from your recovery console, either from your installation cd, or via download from one of:
http://www.thecomputerparamedic.com/files/rc.iso
http://www.webtree.ca/windowsxp/tools/bootdiscs/xp_rec_con.zip
http://www.mediafire.com/?rnuzmyjdwz2
It is an advantage to put the RC onto your systemdrive [C:]; instructions for doing this can be had from Microsoft via search.

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