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Today my keyboard works unexpectedly.For example

"shift" + "0" = ":="

"shift" + "m" = " " //no character displayed

"shift" + "4" = " " //no character displayed

I displayed screen keyboard for identify pressed button but i haven't seen any button pressed. Also my keyboard localization is still same in Windows 7.

I am going to mad . How can identify problem ? How can i fix it ?

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What? Please improve your question. What are you trying to do? What is the current result? What is your expected result? – slhck May 19 '11 at 12:51
I'm guessing he's saying that if he taps the shift key and then releases it then presses another key it reacts as though he were still holding down the shift key. Since the on screen keyboard doesn't show the extra keystroke (a clever debug on his part)I'm guessing this is sticky keys. – Blomkvist May 19 '11 at 13:13
oh, makes since, I had no idea what he was talking about. – Jeff F. May 19 '11 at 13:23
I am sorry for all of you for late answer now i tried to improve my question and i hope it is more clear now. – Freshblood May 19 '11 at 13:53
Your keyboard is broken, buy a new one. Have you accidentally pour some water/coffee in it? Maybe ask your family member if they've done that. – lamwaiman1988 May 19 '11 at 14:20

Seeing the revision to your question, this is truly bizarre. If you're certain it's not localisation settings, and you're not seeing any continually pressed keys, then that eliminates most of the usual suspects of this behavior.

I can only think of a couple things to try without having it in front of me:

Hold down the windows key and press 'r'

type intl.cpl and then press ENTER.

On the Keyboards and Language tab, try switching to a similar a similar layout and see if this helps.

If that doesn't help try toggling sticky keys and see what it does:

Click the Start button,

click Control Panel,

click Ease of Access,

click Ease of Access Center,

click Make the keyboard easier to use.

Turn off Sticky keys.

If neither of these has any effect, then you have either a rare hardware malfunction or strangely pointless malware.

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I think it is not because of sticky keys... – Freshblood May 19 '11 at 14:10

As the OP confirmed he got some water into the keyboard recently. I am pretty sure the circuit in the keyboard was mess up by the water.

In this case, some signal from the keys may go to anywhere become the signal went through the water. The signal went to nowhere, so there aren't any response.

The keyboard is broken. If the liquid is only water, try to place the keyboard upside down so that the water can come out. You keyboard become normal again after time, or it is already broken.

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