Windows 7: how to fix usb gaming keyboard ghosting problem

Hello.



I have a laptop which has these specifications :

HP dv6-6c04st i7-2670QM 2.2Ghz 15.6 HD 8GB / 750GB, 2GB VGA -radeon hd 7690m xt, Windows 7 Home Premium 64Bit
+ A4tech x7 g800v usb gaming keyboard which has anti-ghosting feature in fact.
+ razer deathadder v2 gaming mouse
+ aerocool strike x freezer (photo-> www.is.gd/aerocool)
+ lcd monitor connected to laptop

My problem is that keyboard ghosting when Im playing quake3 fps game. when I try to switch weapon after 3-4 multijumps(pressing spacebar 3-4 times in a row) it doesn't let me to change the weapon. I try the same thing with my laptop's internal keyboard there is no any problem. Does any1 know how to fix this problem ?

Have you installed the keyboard driver along with any updated firmware?