" I have one bead I took out from one of my old faulty keyboard can I use that one. "

Of course you can - but as long as THAT ferrite was not the reason for your keyboard failure ;-))

OK will let you know when I zero in on some beads that are available locally. ( The gypsy near my house has plenty of these beads, in various colours - but I understand that they are not meant for noise suppression ......)

Cheers.

Raghu