Game crash

Hello everyone, i am a new player, haven't finished the game yet but now m'y game keep on crashing. It worked fine for 30hr but now it suddently crash after ~30 minutes may i be in game or afk on thé menu. This game is incredible and i want to keep on paying Have some of you already expériences this issue ? I'm on a Lenovo thinkbook laptop with Intel core i7 and Intel irisX graphics. Thanks you in advance for your time