My Samsung laptop has a "Fn Lock" key right above the + key. I pressed it and it fixed the issue you describe.
I finally found it after a day or two of dealing with the 0 key menu issue.
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I have Windows 8 on a Samsung laptop.
When NUMLOCK is on, all numbers work EXCEPT the zero (0) key.
When pressed, it opens the small 'undo' menu in the top left corner of the screen. It is as though the Function-0 key is stuck.
Any ideas to fix would be appreciated.
Jan
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My Samsung laptop has a "Fn Lock" key right above the + key. I pressed it and it fixed the issue you describe.
I finally found it after a day or two of dealing with the 0 key menu issue.
Try pressing Ctrl and Fn key and the Num lock key together. This should revert the keys back as normal.
Let us know if this works.
THANK YOU!!!!
I suffered for weeks, then the problem miraculously disappeared, then it popped up again.
That "Fn Lock" is an easy one to hit by accident, and with the only thing it seemed affect being the keypad zero key, it was impossible to figure out on my own.
00000000000000
Thank you!!
I've never seen this undo menu you mention, maybe it's a special feature from Samsung. In any case, it sounds like that keypress is being seen, so I agree with you that most likely the FN key is stuck (or there is some kind of FN-lock). Let me ask though, when did this start?