PS2 Mouse port not working 2

[bobtherr]

I have an OLD Gateway 2000 P5-75 that has a PS2 mouse port built in to the motherboard but will not work. (The PC recognizes a serial mouse plugged into the serial port fine ). The BIOS says "Mouse Not Installed" (this is an informational setting only - no way to change it), however WIN 98 tries to install drivers for the PS2 after I delete it in the device manager. After P&P installs it, the device manager says "Device is not present, not working properly or does not have all the drivers installed". Updating the drivers does not help. Any ideas? Thanks

 

[ski]

The PS/2 port may be bad.
You should be able to prevent Windows from loading ithe PS/2 port's drivers by checking the box for 'Disable in this hardware profile' for the port in Device Manager.

 

[micker377]

Is the mouse port actually hard wired on the motherboard, or is this a "back plane" socket that plugs INTO the mobo?

 

[bobtherr]

It is hard wired.

 

[micker377]

Do you have USB ports on this system? If not, looks like you're stuck with using a serial mouse. I presume you tried a different PS/2 mouse.

 

[felixc]

The PS/2 mouse port can also be disabled in the BIOS menus. Have you verified it? The mouse uses IRQ12. Is IRQ 12 assigned to something else?