Studio 2017 not possible to open, no failure message

It is not possible to open STudio 2017. It does nothing. I went to my RWs account and reseted the licence, but now I cant activate it again. Last time I had the same proublem - not posssible to open the Studio. I contacted the support by email and thy helped me via remote access to my NB. I dont know how they have done. I m not able to fix the issue alone. Please help.

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