I have a windows disk, i started it, it looked like it was working well and then it asked for a disc 2 which there isnt one

the user_guides cds apparently dont work.
Im trying everything to find out what this bleeding password is or even reset it but there seems to be no solutions
I managed to re-install the corrupt files in windows but every now and then it shows different blue screens of death although on the upside it took 30 mins to load up and now takes 5 so i have done something right. however, 2 out of 4 times i turn it on it keeps saying Operating system not found and if i manage to pass that it likes to go into windows xp scan (FAT32) every time i manage to get to the windows loading screen which takes some time.
i think the laptop is well and truely fooked! was just hoping to find a way of fixing it