From: Computerpilot on 06/20/2002
You have a hardware or driver problem. When Windows is booting, a driver is telling windows that there is a problem. Microsoft mentions a problem with the Genius Netscroll program and recommends uninstall and visit their website for an update. I am not sure if you have this software installed on your computer. See KBA article Q257944.
I would do a step-by-step startup confirmation. You can do this by pushing F8 a during startup of windows. This should get you to the menu of options. Choose the 'step-by-step confirmation' option and see if the computer hangs or displays error message after a particualar device loads. This will indicate what is causing the problem.
Check to see what is loading during startup. Perhaps you installed something recently that has a startup EXE file. Think back to when this all started occuring. Check your startup folder (start-programs-startup) to see if any mystery programs are being launched.
Can you boot with Safe Mode? That might indicate that there is a problem with a driver or loaded software at startup. Check the device manager for yellow or red icons indicating a problem with a driver for your hardware.
hope this helps...