Using Logitech Mice under Windows 3.0: Using the Logitech Plus Driver for Windows 3.0: The Logitech Plus driver is included with MouseWare 5.0 and above. It will work with all models of the Logitech Mouse, and gives three button functionality to Logitech Bus and PS/2 type mice. If the Plus driver has been installed from MouseWare, or the Logitech Mouse/Windows bundle is being used, continue to select the Logitech Plus driver for the mouse. Check the MouseWare documentation for the different settings available when using the Logitech Plus Driver. If you have an earlier version of the mouse software and do not wish to upgrade, the following selections will also work: Series 9 Serial Mouse, Series 7 Serial Mouse The proper selection for the Series 9 Serial Mouse and Series 7 Serial Mouse is Logitech Serial Mouse. If the mouse does not respond after making this selection, try the following: 1. Reboot your system with NO Memory Resident Software 2. Run SETUP and select "Logitech Serial Mouse" 3. Load the Logitech DOS Mouse Driver 4. Run Windows MouseMan Serial Mouse, Dexxa Serial Mouse All MouseMan mice are shipped with the Logitech Plus Driver. We recommend that you install this driver for optimal performance. However, if you have a Dexxa Serial mouse or simply opt not to use the Logitech driver, the proper selection for the MouseMan Serial Mouse or Dexxa Serial Mouse is Microsoft Serial Mouse. If the mouse does not respond after making this selection, try the following: 1. Reboot your system with NO Memory Resident Software 2. Run SETUP and select "Microsoft Serial Mouse" 3. Load the Logitech DOS Mouse Driver 4. Run Windows The following commands should be used for loading the mouse driver for Logitech Serial mice: If the mouse is on COM1 use the command: MOUSE SER If the mouse is on COM2 use the command: MOUSE SER 2 If the problems persist after following the above guidelines, try the following: 1. Switch off the computer and then take out all extra hardware devices (such as internal modems, fax cards, tape backup units, etc.) This should eliminate an IRQ conflict. 2. Follow Steps 1 through 4 from above. If this solves the problem, then one of the removed devices is set for the same IRQ that the mouse is using. Add the cards back one at a time until the problem is reproduced and then check the device documentation on switching IRQ settings. If the symptoms continue, inspect the serial board for aa large chip in the center of the card with the word WINBOND on it. This is a problematic chipset that can cause Windows to be unable to initialize the mouse properly. Replacing the serial card with another brand should solve the problem. Logitech Bus and PS/2 Mouse with Windows 3.0 The proper selection for Logitech Bus Mice is Microsoft Bus or PS/2 Mouse. If the mouse does not respond after making this selection, try the following: 1. Reboot your system with NO Memory Resident Software 2. Run SETUP and select "Microsoft Bus or PS/2 Mouse" 3. Load the Logitech DOS Mouse Driver 4. Run Windows If the problem persists, check to make sure that there is no other device using the same IRQ as the mouse (check the mouse documentation for available IRQ settings). Relationship between MOUSE.COM and WINDOWS 3.0: MOUSE.COM is not needed to run the mouse with Windows. MOUSE.COM should be loaded in the memory if you are using mouse-based applications under DOS. We recommend loading the DOS driver before running Windows.