Omg thispc is wierd

Hello, helps need this for youtbe

i put windows 7 disc in to boot of that and it boots up to the walpaper and the mouse ...,,, noicons orany thing
when ever i try booting it into my win Xp the main os it boots to the F8 menu and click normal modeit loads to the booting thing when done it doesnt shown thing but the mouse
it has 2 memory block thingy one is just for storage other contains the os.... is the user information gone??????????????? do ineedto take the main memory block in to get fixed??