Computer Stops Responding After Windows 98 UpgradeID: Q207831 
  | 
After you upgrade your Microsoft Windows 95-based computer to Windows 98, your computer may stop responding (hang) when you restart your computer.
This behavior can occur if your communication port 1 (COM1) has the same Interrupt Request (IRQ) as COM3.
To resolve this behavior, restart your computer in Safe Mode and remove COM3:
Additional query words:
Keywords          : kbhw win98 
Version           : WINDOWS:
Platform          : WINDOWS 
Issue type        : kbprb 
Last Reviewed: June 10, 1999