Mouse acts up when using another device simultaneously due to device conflict.
Cause:
Resource conflicts between mouse and another device interferes with mouse performance.
Solution:
Stop using the device that conflicts with mouse. Open the Device Manager, view the driver of the device that is conflicting with the mouse, and choose resources for the device that do not conflict with the mouse or any other device. Restart Windows 95.
1) Stop using the device that is interfering with the mouse.
2) Open 'Device Manager'. (The 'Device Manager' dialog box appears.)
Device Manager
3) Select the 'View devices by type' radio button.
4) Select the specific device type from the device list.
5) Click on the selected device to view the installed drivers for the device.
6) Select the specific driver for the device that is interfering with the mouse.
7) Click 'Properties'. (The device 'Properties' dialog box appears.)
An example device 'Properties' dialog box
8) If available, select the 'Resources' tab and do the following:
NOTE: Some devices do not use dynamically assigned resource values (i.e. non plug-and-play devices, COM ports, and printer ports). These devices must use preset resource values set by hardware jumpers or switches. Please refer to a device's technical manual before attempting to change any resources.
a) Clear the 'Use automatic settings' check box.
b) Select the conflicting resource type (i.e. IRQ, I/O addresses, and DMA) in the 'Resource Settings:' list box, and click 'Change Settings...'. (The 'Change Settings' dialog box appears.)
NOTE: If the message 'This resource setting cannot be modified' appears, the resource value cannot be changed.
'No Modifications Allowed' dialog box
c) Review the list of unassigned values for this resource, select one, and click 'OK'.
d) Restart Windows 95.
9) If the 'Resources' tab is not present, refer to the device's technical manual for instructions on how to resolve conflicts in Windows 95, or contact next-level help.