ok i got a computer here that is not bootup in to windows it has 98 on it i thought it might be the hard drive but i try putting the hard drive in a different michine and it boot up fine and i took the hard drive from that machine which has 2000 on it and put it in the machine that is not working and it comes say starting windows 2000 and get all the way to the end of that bar and then it just stays there does nothing so can you tell me what is wrong with this machine