help

i turned on my desktop and the monitor wouldnt come on it said it was in
standby mode, i got that figured out and then it said the keyboard wasnt
working so i got that too figured out but now i have a blue screen that says,
"a problem has been detected and windows has been shut down to prevent damage
to your computer.
PAGE_FAULT_IN_NONPAGED_AREA

then it goes on to say if this is the first time i have seen the stop error
screen restart computer which i have done several times.
then it says to check if any new hardward or software has been properly
installed which it has. then it says if the problem continues to disable or
remove any new hardward and to disable BIOS memory options but the computer
won't go to any screen at all but the blue one even when i have tried to
restart it and press F8 it still takes me to the same blue
screen........................................................
help dont know what to do and i have important information on my pc which is
used for school...............................
desperate