Crashes when launching

When I launch Fortnite appears the UE4 Crash reporter telling me “An Unreal process has crashed”.
My drivers are updated.
It is an ASUS X53S with 8GB of RAM, 8 core I7 and with NVIDIA GEFORCE GT540M - CUDA 2GB.
It started crashing yesterday, maybe when I updated Windows 10.

This are the “summary information”:
LoginId:6c7033d94f5d069e117acf84f8fac3ef
EpicAccountId:89c761ae9a1c45628c1996da203cc60d

You do not have any debugging symbols required to display the callstack for this crash

These are the Logs:

link text

link text

Thank you very much.
Pierfrancesco B.