Internet exsplorer wont go away?



hi can any 1 please help me
i use aol broadband and when im on line internet exsplore keeps on popping up with loads of pages and usually freezes aol ?

my computer allso wont turn off when using the start menu or button on the tower ? is this through internet exsplorer ?
i have to turn my comp off by the plug which now when i turn on my comp i get a blue back ground and it tells me its checking files ???

i use xp home. comp new ?

help ???

cheers cheza x


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