HP ProBook 4720s - Keyboard problem

Hello all,
Recently I've bought HP Probook 4720s, and sometimes keyboard stops working normally, some buttons not print on the screen (in any editor, notepad or ms word etc)
For example, if I print 10 times button "1" then "enter" in notepad, and repeat that several times, result will be:
111111111
1111111111
111111111
111111111
1111111111
111111111
1111111111
1111111111
PC system is Windows 7 Ultimate, BIOS is 16/09/2010, same problem occurs in Safe Mode.
Link to video with problem demonstration: http://www.youtube.com/watch?v=zAFDb9HqEzs
Could anyone help me?
Thanks!
Actually issue described: http://h30499.www3.hp.com/t5/Notebook-HP-Compaq-Armada-EVO/HP-ProBook-4720s-Keyboard-problem/td-p/23...
Maybe here HP support can provide with some solution! Thanks.

Is the unit under warranty? The warrant status can be checked here:
http://www13.itrc.hp.com/service/ewarranty/warrantyResults.do?admit=109447627+1286541891570+28353475
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This question was solved.
View Solution.

Hi @Bax23 ,
Welcome to the HP forum!
To get your issue more exposure I would suggest posting it in the commercial forums since the probook 4720s is a commercial product. You can do this at:
Notebook - HP ProBook, ZBook, EliteBook, Compaq, Slate/Tablet PC, Armada, LTE.
The support page for your product may be helpful in the meantime: HP ProBook 4720s Notebook PC
I hope this helps.
Sparkles1
I work on behalf of HP
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Hello @trulex,
To get your issue more exposure I would suggest posting it in the commercial forums since the HP ProBook 4720s Notebook PC is a commercial product. You can do this at Notebook - HP ProBook, EliteBook, Compaq, Slate/Tablet PC, Armada, LTE.
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hi ns3035,
Thank You for using Lenovo Community Forums!
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HP ProBook 4720s - Keyboard problem

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