Microsoft gives the following recommendations:
Wired mouse problems
The mouse pointer moves erratically
To resolve this problem, use the following methods in the order that they appear in.
• Reduce the pointer speed and acceleration. To do this, follow these steps:
1. Click Start, click Run, type main.cpl, and then click OK to open the Mouse Properties dialog box.
2. Click the Pointer Options tab. In the Motion area, drag the slider to the left to select a slower pointer speed.
3. Click to select the Enhance pointer precision check box, and then click OK.
• Connect the mouse to your computer by using a different USB port or PS2 port. To do this, use one of the following methods:
• If the USB cable for your mouse is currently connected to a USB hub, disconnect the device from the hub, and then connect it to a USB port on your computer.
• If your device is already connected to a USB port on your computer, try to connect the device to a different USB port, if one is available.
• If your device is connected to a PS/2 port on your computer, make sure that the USB plug for your mouse is connected to the green USB-to-PS/2 adaptor and that this adaptor is plugged into the mouse PS/2 port on your computer. The mouse PS/2 port on your computer may also be green. If you are not sure which PS/2 port is the mouse PS/2 port, see the documentation that came with your computer.
• If you have to make changes to your configuration, shut off your computer, make the changes, and then restart your computer. If your mouse has both USB and PS/2 connections, try using the other type of connection. For example, if you are using the USB port, try connecting the mouse to the PS/2 connection instead.
• For optical mouse devices, try using a different mouse surface or mouse pad. Test the mouse pointer by using a sheet of white paper instead of a mouse pad.
• Reduce the graphics hardware acceleration setting in Microsoft Windows. To do this, follow these steps:
Note Because there are several versions of Microsoft Windows, the following steps may be different on your computer. If they are, see your product documentation to complete these steps.
1. Right-click the desktop, and then click Properties.
2. Click the Settings tab, and then click Advanced.
3. Click the Troubleshoot tab.
4. Move the Hardware Acceleration slider until it is one notch to the right of None. This setting disables all but the basic accelerations.
5. Click OK two times.
For more information about how to reduce the graphics hardware acceleration settings, click the following article number to view the article in the Microsoft Knowledge Base:
) How to change the graphics hardware acceleration setting in Windows
• Use the MousInfo Tool that is included with the Microsoft IntelliPoint software. To run the MousInfo tool, click Start, click Run, type mousinfo, and then click OK.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
) How to use the MousInfo Tool included with IntelliPoint software
• In Microsoft Windows 98 and in Microsoft Windows Millennium Edition, start the computer in Safe mode, and then remove all the device entries that are listed under Mouse Ports. In Microsoft Windows 2000 and in Microsoft Windows XP, start the computer in Safe mode, and then remove all the device entries that are listed under Mice and other pointing devices. Restart the computer in Normal mode.
• Install the mouse on another computer. Make sure that the mouse works correctly when it is not attached to your computer.