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I have strange problem with my almost new laptop. Aftear I leave it turned on for some hours and back to use it, it was printing something like ^[[2~ on the screen and I cannot stop it. After rebooting it did not show any activity. After few hours I managed to turn it on by hiting random keys at keyboard. I starts that way but I have to use external keyboard to type anything. When I randomly stroke the keys when is turned on, it sometimes print that unrecognised characters. It works the same way at linux and windows (ubuntu, windows 7).

What can be the reason it started to work so strange and is there anyway to fix it without sending it to warranty and waiting few weeks? :/ I dont remember to make it wet, but they may be something like cigaretes ashes in it, I could not remember...

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You may not lose your laptop for weeks if you are willing to replace the keyboard yourself. Some companies (Dell & HP for 2) are happy to send the keyboard out and then talk you through the replacement. –  Tog Nov 14 '12 at 16:53
    
If there's likely cigarette ash and possibly other substances in it, could easily just be stuff on the contacts. You can clean it yourself if so: Google for a disassembly guide for your laptop to lift the keyboard out and carefully clean it with a small amount of soapy water. Leave to dry for at least 24hrs before you put it back. –  jam Nov 15 '12 at 8:17

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