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Keyboard scrambles

N

NapalmDeath

n00b
Joined
Aug 4, 2004
Messages
63
My keyboard will have keys stop working, or characters transpose.
I can sometimes clear the problem by powering down, turning off power ATX PSU switch, pulling power cord, then reconnect, power back up.

It doesn't always work, but seems to be the only thing that will.
So this points to a grounding issue. Sometimes I need to do the process several times.

Things I've tried

- rebuilt the PC and made sure motherboard lined up with mounting screws

- tried several different keyboards, both PS2, USB, USB with PS2 adapter

- RMA'd the motherboard for a new one

- bought a PCI USB card (thinking it would be isolated from motherboard connectors)

The motherboard support told me to rebuild it on cardboard to eliminate everything, but I'm hoping it's something simplier. They also said they once had a case where static was coming down the Ethernet cable and scrambling the keyboard.

No other USB peripheral has an issue. I moved my ipod off, and just use an USB mouse now.


Spec's
Windows XP SP2
Asus A8N-VM CSM rev 1.01
AMD 3200+
Logitech MX700 USB cradle mouse, has seperate AC power connector attached to USB cable to power cradle? issue?
Logitech keyboard, IBM old, Saitek USB, many others
Silverstone SG-01E case
Enermax Liberty 400 PSU
Corsair Value DDR-400 RAM
eVGA 7900GT video card with Zalman VF-900 cooler
APC UPS 500VA

Would re-installing windows help?
I just don't understand what can cause a keyboard to scramble. Is it grounding or something wrong with Windows?
 
Is there an option in the BIOS for USB Keyboard Support, or like Legacy USB Support, I have seen that cause issues if not set properly, or maybe update the BIOS.

Driver issue?? especially if using multi function keyboards that have like media keys or programmable keys, try updating drivers, especially Logitech.

Is your Liberty PSU having voltage issues???

Grounding issues, whether it be the mountuing of the mb or the case itself, or the enviroment around you.

and in the rare case, I have witnessed seeing people using PS2 mouse and keyboard and hook them up backwards (keyboard in mouse port, mouse in keyboard port) and seen them boot into Windows with no error or warnings in post and see funny crap happen when you try using the mouse and keyboard.
 
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