cold boot problems

I have a windows 98 S/E pc that when you to a shutdown/restart it comes back up as many times as you want. But when you do shutdown/shutdown & leave for a few seconds it boots as far as the win 98 logo screen & then goes to black screen & hangs. When you turn it off & re-boot you can go into safe mode & it will boot up properly with a step by step confirmation saying yes to all options. Can anyone help me to boot up properly