Frank,

Have you upgraded to Windows 95 or 98 recently?  My mouse behaved similarly
in DOS mode following an OS upgrade.  A new generic serial mouse driver (for
DOS) solved the problem.

Does this happen in Windows or only in DOS mode?
If in Windows, the Windows Mouse Driver is probably corrupt, delete it and
replace it from your Windows CD.  If in DOS, the driver is missing, i.e. not
loaded in CONFIG.SYS or AUTOEXEC.BAT.  Load the appropriate driver in you
start up file(s).

Is it a serial mouse?
Many serial mouse drivers are interchangeable (i.e. not manufacturer
specific).
I'm using a Microsoft Serial Mouse, and a Logitech Serial Mouse Driver (less
buggy than the MS one).
Find the most current driver you can and give it a shot.

Let us know how it turns out.

Dave

On 10 Dec 98 at 13:49, Frank Suszka wrote:

> I am having a problem with a computer that isn't recognizing the
> mouse. I keep getting the following message: Mouse driver not
> installed, Run-time error R6001-null pointer assignment.
>
> I have run the diagnostics that came with the mouse but it keeps
> telling me the Driver is not installed and it can't find the mouse.
>
> I would appreciate any assistance on this matter.
>
> The computer is running a Pent-S 100mhz chip and it has 16mgs of
> ram. I have looked in the cmos and didn't see anything out of the
> ordinary. I have switched mice, connections and adapters with no
> positive results.

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