so ive been having a problem with my computer upon startup it loads boot menu and goes to windows vista loading screen but tends to stay at it forever resulting in my holding down my power button till it shuts off then trying again, but anyways ive been having to do that alot lately and sometimes i gotta go to system repair.sometimes i can actually get onto my computer but then after running a game it Freezes or Shuts off wich is not normal, its not a bad comp. now for some reason when i try to boot my comp it wont even display anything but it still does run??? please help this is very frustrating, im pretty sure that my hard drive went but im not sure if anything else did aswell with it. Also is there a way i can checl to see if the hard drive still works by putting it in a diff comp? cuz i need to backup alot of files on it. Thanks!