If possible, test with another keyboard. And a $10 keyboard will work fine for at least a year as long as you don't use it to whack cockroaches.Originally posted by Thomas300:sometimes before the pc start, they detect the keyboard(num lock lights up) liao but cannot type. Then must unplug and plug in again. So now normally i will start the pc first, wait till it loads finish then plug in the keyboard. My keyboard cheap and laoya one from sls. Must change to branded then np?