>>>>> I have used a logitech optical mouse for several years without
>>>>> problem.
>>>>> Yesterday I bought one for my mother's computer. It failed to work or
>>>>> be
>>>>> recognized (Dell dimension 2300). I thought perhaps the dell system
>>>>> was
>>>>> being finicky. I removed the logitech optical mouse from MY system
>>>>> (Asus
>>>>> A7V8x, winxp) in the ps2 port using an adapter (as usual) and
>>>>> installed
>>>> the
>>>>> new mouse and booted up.
>>>>>
>>>>> MY system failed to recognize the mouse (cursor wouldn't move, same
>>>>> like
>>>> my
>>>>> mother's computer).
>>>>>
>>>>> I removed the mouse from the ps2 port and installed it directly into
>>>>> the
>>>> usb
>>>>> port.
>>>>>
>>>>> Reboot.
>>>>>
>>>>> Still the cursor does not move! The mouse led is on and very bright.
>>>>> It
>>>>> stays bright. My other logitech mouse is bright when I lift it to look
>>>>> at the light but goes dimmer right away. The new mouse stays bright.
>>>>>
>>>>> I returned it to the store and got an exchange. They were able to get
>>>>> the mouse working with no problem at the store on a new system.
>>>>>
>>>>> I got home and tried the replacement.
>>>>>
>>>>> It does not work.
>>>>>
>>>>> The logitech mouse I have that DOES work is M/N M-BJ58 , P/N
>>>>> 830524-0000.

[snip]

> The only other thing I could think of is what type of surface are you
> using it on? Maybe the color or texture is bad. I have a laser mouse now
> and you can't even see the beam.

That is a good point - the only surface I have found that my mouse doesn't
work on is one of my mouse mats - a very shiny mat.