windows doesn't recognize keyboard

January 17, 2012 at 08:24:57
Specs: Windows XP

have a desktop clone on XP and all of a sudden the keyboard stopped working and I can't type anything. Had a spare keyboard and hooked up to computer but same thing, computer doesn't recognize keyboard and when I opened up control panel and keyboard icon nothing was there. I rebooted computer 3 different times and still doesn't recoknize key board. Any suggestions ?

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#1
January 17, 2012 at 09:24:49

Hi Daymore,

do either or both k/b's work ok on another pc?

If yes, the problem sounds internal, maybe a dry joint where the k/b socket joins the mobo in the pc.

Presume the k/b is directly connected with a ps2 connector. If socket cannot be tested/repaired, maybe a usb k/b will have to be used.

If you have no k/b, this may help:-

programs/accessories/accessability/on-screen keyboard

Please advise back on progress.

Good Luck - Keep us posted.


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#2
January 17, 2012 at 12:12:19

Are the keyboards PS/2 type connection? If so, try a USB type.

PS/2 ports are NOT hot swappable. Doing so may burn out the controller.

Also, see if the keyboard functions in the POST screens. Try tapping the F key displayed on screen to enter the setup.

I a USB keyboard, try a different USB port or test that port with another device.


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#3
January 17, 2012 at 12:52:34

Thank you for your comments and yes I tried the same keyboard at my computer at work and it does worl. For some reason I don't think that XP recognizes the ps2 keyboard(s) when it boots up.

I think you maybe correct about the socket not working, as the only thing that I can remeber that I did was use the spray bottle of cold air to spray the dust out of the back of the computer ( ie sprayed the air on fan, and power cord, & cord to monitor { which all work by the way). The wireless mouse works as well, its just the keyboard that even when plugged into ps socket the green light does not light up on keyboard.

I have an older desk top unit that the keyboard socket is working. Is it a big job for me to take out the keyboard socket from old desk top and try and install in current desk top ? will there be software that I have to download as well ?

Thanks


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Related Solutions

#4
January 17, 2012 at 13:00:13

HI

yes both keyboards I tried are the ps2 type and don't work with desk top at home. Brought both keyboards to work and hooked up to p/c at work and both of them work ( but not on p/c at home).

I have an older p/c, can I take out the keyboard round socket and install it in the current desk top that doesn't recognize the keyboard?

what other device ( besides the un working keyboard) can I test the keyboard socket behind the computer with to see if it will work ?

I have someone coming over Thursday night to take a look as I think it may have something to do when the system boots up it doesn't recognize the keyboard. He'll check it out and if worse comes to worse I'll buy a USB keyboard and hope that this will work.

Thank you


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#5
January 17, 2012 at 13:04:14

Did you spray when the computer was on or even just plugged in?

Did you try to connect or disconnect the keyboards while the computer was on?


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#6
January 18, 2012 at 07:46:23

Hi Daymore,

for the time being forget the k/b socket on the *working* pc.

On the *failed* pc, generally at the rear of the k/b socket are a number of connection pins which are soldered to a circuit board - possibly the mobo itself.

Try inspecting closely to see if one or more of these pins is broken or has a dry joint.

More sure what OtheHill means by hot swappable, but disconnecting/connecting just about every plug or connector (except usb) while a pc is switched on is a strictly NoGo Area!

One thought - could you be connecting the ps2 k/b to the ps2 Mouse socket in error?

Good Luck - Keep us posted.


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#7
January 18, 2012 at 11:39:21

Hot swapping PS/2 means connecting or disconnecting a PS/2 device while the computer is under power. That action has a good chance of frying the PS/2 controller. Once that happens nothing PS/2 will work.

If you also use a PS/2 mouse and it is working then the controller is OK.

Are you connecting the PS/2 keyboard directl to the socket or are you using some type of adapter to USB or from USB?


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#8
January 19, 2012 at 15:14:54

Hello everyone

A friend of mine came over and saw that the original PS2 keyboard wasn't working . He brought a new USB keyboard, re booted the system and plugged in the USB keyboard and it worked right off the bat.

I then asked him to re-plug the old ps2 keyboard back in, and guess what, the ps2 keyboard worked.So I ended buying the new usb keyboard ( an acer for $18.00 ) and I'll use the USB keyboard as a main one and keep the old PS2 keyboard as a back up

Once the system recognized the USB keyboard it also recognized the old PS2 keyboard as well. Really weird though

Thanks to everyone for their suggestions and comments


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