Windows 98 Second Edition Millennium Editions
In 6 series, when you get the above error, you have to disable the com port power saving option in the registry.
1. Use the Registry Editor to locate the EnablePowerManagement value in the following registry key:
HKEY_LOCAL_MACHINESystemCurrentControlSetServicesVxdVCOMM
2. On the EDIT menu, click MODIFY, change 01 to 00, and then click OK.
3. Quit Registry Editor and restart the computer.