odd problem after startup windows 7

  VerpoortenNick 06:38 24 Dec 14

I suddenly have this problem after my windows 7 startup. The first keystroke i do i get this ~ symbol before it. After that it does not happen again until the next time i restart my pc. It is not a problem that prevents me from working on my pc but i find it odd and would like to know why this happens. It never happened before and i have not changed any hardware of any sorts. Anybody has any idea how this could happen?

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