In a case like this, did you go into Safe Mode, and remove ALL
mice this way?
I have had this problem too, and tried "forcing" a real mode DOS
mouse driver.
This worked for several weeks and then gave me a Windows
protection error. Invalid configuration, re-install Windows.
Removing the DOS mouse drivers and switching to a serial mouse
did the trick.
I asked on a different list, and someone said my mice might be too old
to be detected properly.    (They are old...)        Rick Glazier

From: "Wayne Aiello" <[log in to unmask]>
>         Last night while unattended, my computer froze, upon rebooting I
got the
> message "no PS/2 mouse attached to computer" . I haven't been able to get
> it to see the mouse since. Looked in cmos but could see no setting that
> would affect this. tried removing things so windows could detect them
> again, however it never in the process saw the mouse. Tried several mice
> all PS/2's failed to work, so went with serial mouse and that works fine.

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