first sorry for my English

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Well I have a problem with my pc everytime I start it up it freezes in this screen but the one of windows xp
http://www.windowsreinstall.com/inst.../pic040sml.jpg but I can still use the start up( the one u choose if to start or not the internet adapter), The only way I found to start the pc normaly is to do a repair start but I hate to have to do a repair start every 2 days-.-.
I tried all I formated my pc but it stills come up.
Plz help me