I am running NT server 4.0 sp5 on a P166 with a serial mouse. We haven’t had any problems with it until yesterday. We had to restart the machine, and ever since it has not been loading the mouse. I went into event viewer and see the following notices: 1. from service control manager: The following boot start or system start drivers failed to load: Mouclass, sermouse. 2. from Mouclass: Could not locate the device object for one or more pointer port devices. I tried different mice, different drivers (it was just serial mouse, and I tried microsoft serial mouse). And have rebooted several times with no difference. I don’t know of any changes we made that might affect it. This machine runs our tape backup but is otherwise not usedvery much. Thank you for your help.