yes i had a rack at the bottom, its possible the heats was to high< but it wasnt at a full rolling boil. Mine goes from one to ten and it was on six when it busted< i just think it was may because the jar had be brought to a boil once before a couple times>
@lbussy_ if it were only that easy> it is a laptop first of all or really a notebook> i treid the onscreen keyboard it it is doing the same thing< i plugged a new keyboard into it and it does the same think so it is a hardware problem< thankfully it is still under warranty> but they are sending me a box to mail it to them and that will seven to ten days before it is even shipped back.
go to the accessibility options> make sure all the keyboard_related items are turned off>