chemicalex

heya guys
i am havin problems with win xp it started when i gave my pc to a friend so he can format it for me.
he gave it back and i found out he installed SP1 only. I download sp2 from a microsoft website and i start installing. half way i get an error message saying "access denied"
then the install starts rolling back what it did and all of a suddenly my pc restarts so i am like ok...
computers starts again and windows loads but when i get to choosing the user menu it restarts.
iv tried going 2 safe mode but that never worked.
now i dont mind formatting again but...is there any way i can get to my C: drive so i can copy my files to my H: drive??
thanks alot

computer specs:
Windows XP SP1
AMD mother board and processor 1.50 GHZ 228MB of RAM