erratic mouse in win2000 on old vaio laptop

[Guest stefmazurek@gmail.com]

I have an old Vaio Laptop PCG-F650 and most of the time use an

external compaq PS/2 mouse through the 9-pin connector in the back

instead of the touch pad.

 

The external mouse works fine, but whenever I boot the computer anew,

the mouse freaks out only by touching it; it's all over the screen.

Then, I have to unplug the mouse, touch the mouse pad a couple of

times; the pointer eventually stops going erratic. After this

procedure, I can plug the mouse back in through the 9-pin and the

mouse works fine. Now, I have to repeat this procedure everytime I

shut-down windows. I tried disabling the touch pad, but this does not

help.

 

Anyone has an idea? I'd appreciate any advice.

 

Thanks.