I have recently rebuilt my Dell Latitude laptop from Windows 98 to Windows 2000. My problem is that when I reboot the laptop, it freezes on the Windows 2000 splash screen. The problem does not arise when I do a shut down and start. I have adjusted the power management options in the BIOS but this doesn't do the trick. I have also checked the fans and they are fine. Can someone please advise on measures I can take.