I recently put my old processor and memory into a friend of mines computer. It all went in good, though I had to underclock my P200MMX so that it would work on the mother board. It was upgraded from a P100 with 16MB to a P166 with 48MB. I installed my Canopus Pure3d. It all works fine except the mouse. Windows doesn't show any errors. The mouse just will not respond. I have tried replacing the serial cables to no avail. I then tried the mouse on my computer and it works. Please if there is someone out there who can enlighten me I would really appreciate it. Could I have done something to the motherboard? As far as I know my hands didn't go anywere near the serial ports!!!!!!!