Suddenaly I cannot start Minecraft but it used to work

All of the sudden my game won't launch. When I click Play button the launcher appears to perform a quick download or file check (what it is usually doing) and then switches to a "Game Output (PlayerName)" tab, that has the following 3 lines:
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Completely ignored arguments: [--nativeLauncherVersion, 307]
[11:57:23] [Client thread/INFO]: Setting user: Fairybane
[11:57:24] [Client thread/INFO]: LWJGL Version: 2.9.4
—

The "Launcher Log" contains a lot of lines but one of them is an error saying:
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[12:00:46 ERROR]: Game ended with bad state (exit code -1073740791)
—

I have attached some screenshots and logs - I'm not sure if there is any extra information I can give to help pin point the problem, but if so please let me know.

I have tried to uninstall Java 8 121 and also tried reinstalling. I have tried to deleve the .minecraft folder in AppData and I have tried to reinstall Minecraft - nothing helps.
My daughter who's running Windows 7 x64 can still run her game.