{MOVED}Alienware M17x R3 keyboard issues while gaming

Roll over limitation is physical hardware limitaton.  Thats why they make "Gamer" Usb Keyboards.

Certain high-end keyboards have "n-key rollover". This means that each key is scanned completely independently by the keyboard hardware, so that each keypress is correctly detected regardless of how many other keys are being pressed or held down at the time.   The Razer BlackWidow Stealth edition keyboards use the tactile but quiet brown key switches, while the Razer BlackWidow keyboards use the tactile and clicky blue mechanical key switches.

Razer BlackWidow keyboards do have anti-ghosting capabilities. The standard Razer BlackWidow keyboards feature a gaming optimized key matrix for the keys around the regular WASD cluster allowing multiple key presses without key ghosting or jamming. The Razer BlackWidow Stealth Ultimate edition keyboard on the other hand, offers a full 6-key rollover (6KRO) capability for multiple key presses. The BlackWidow mechanical keyboards are USB only, meaning they cannot have true N-key rollover. N-key rollover (NKRO) is only possible with a direct connection to a native PS/2 port on the computer which also has other limitations that USB overcomes. The Razer BlackWidow keyboards' anti-ghosting capabilities serve a similar purpose while using the more modern and readily available USB port.   Typically these "keyboards" cost OVER $100 and some as high as $200.

www.newegg.com/.../Product.aspx

Microsoft SIDEWINDER X4 Keyboard

Corsair Vengeance K95 CH-9000020-NA Black/Metal USB Wired Gaming Mechanical Keyboard (NA)

AZIO Levetron Mech5 KB577U Black USB Wired Gaming Mechanical Keyboard w/ Cherry Black MX Switches