2.I tried to check the device manager, it is not at all available there.
3.Reconnected the mouse to the PS/2 port, Restarted Windows but of no use. 4.Mouse didnot work.
5.Reinstalled the hardware with dificulty. IRQ12 problem found.
6.Checked the mouse with another PC. It worked Fine.
7.Bought a USB to PS/2 connector and connected the mouse with the same- Result mouse worked fine. Subsequently found that my PS/2 keyboard also stopped functioning when connected alone with PS/2 port.( It was working for some time even when ps/2 mouse was bad). Enabled PS/2 keyboard support in BIOS and connected the keyboard to USB to ps/2 connector and it worked fine.
8. Rechecked with PS/2 port it didnot work.Why ???
9. Cleaned the mouse thoroughly. disassembled the system. cleaned the MOBO, checked physical damage near onboard ps/2 port which seems ok. Reassembled the system. Formated the HDD. Reinstalled Win98. But the mouse did not work in PS/2 port. but worked fine with USB to ps/2 connector.
10. Reinstalled Win xp prof. Still same result.
Can any one help.