I have an old Presario 1675 with W98SE.
Mouse stopped working, known good replacement ditto. Touchpad had been disabled because of earlier conflicts.
Have tried all three options in FAQ - touchpad function not available in BIOS - successfully accessed autoexec.bat and config.sys but nowhere any mention of mouse/touchpad or pointing devices. Booting screen shows touchpad software is there - then a new line states "pointing device disabled". I seem to recall there is a file that lists all devices, fonts languages and everything else - thought it was win.ini but got an empty screen.
Reboots bring up same message " please attach mouse... etc" Ad nauseum.
Any additional ideas please?