okie, first post, i jus formatted my thinkpad t60. and the first thing that was totally irritating is the beeping sound whenever 3 or more keys are pressed.
so here’s how you can disable it.
1. Open the Device Manager. You can do this from My Computer -> Properties -> Hardware -> Device Manager.
2. Show Hidden Devices. You can do this from View -> Show hidden devices.
Okie, this part is quite important, cos if u miss this step, u cannot really proceed further.
3. Under Non-Plug and Play Drivers, open the properties for Beep. Go to Driver -> Stop, and the beeping will cease.
You can also Disable the device from starting up by Selecting Disabled in the startup type dropdown list.
Source: Elliot Lee