buffer for keyboard drops/fails to faithfully submit entered keystroke

I have a Toshiba L755-S5277. Let say I'm entering my laptop login PW, and it's 8 characters long. My keyboard will not repeat, to the textbox the keystrokes I have made. I must watch the textbox while entering in my PW to be sure the keys are repeated faithfully!

Question is this an OS (Win7 Home Premium sp1), or a H/W issue? Is there a separate chip acting as the input keyboard buffer, or is it all internal to the CPU VLSI chip?

Thanks, Kevin