Whenever I try to boot up to windows with my CK530 v2 or GK61, my computer will stick on the boot up screen. But when I boot up without or with my crappy 20 dollar keyboard, It will boot to windows every time. It is not a problem with the mouse or headset that I am using though. I only recently got my GK61 and it used to boot up every time, but as of this morning, it started to do the stuck on boot thing. If you need anymore information please comment. I really need help; I've been trying to fix this for the past 3 months.