Working with an Inspiron One 2330. Mouse and Keyboard were working until applying W8.1.
Only driver I can find for KM 632 is a Caps Lock application.
Installing that did not help.
Going to device manager and uninstalling the mouse... and letting the OS find the mouse on restart... did not help.
Trying a wired mouse in a USB port... did not help.
The only threads I have seen so far involve doing a clean reinstall of W8 - and avoiding 8.1.
Would prefer to avoid that.