Error 0xc0000906

Hello everyone! I have a little problem: yesterday, my internet connection had some issues, and I had to restart my computer, and as a result, I find myself with a computer that boots up and displays everything normally, but when I launch the task manager, the CPU is running at 0-1% (hence the total silence of my PC).
- I can't play an AVI, VLC shows me: 0xc0000906
- sometimes, there's no sound...
- the internet bugs sometimes
- some other applications don't work anymore (Adobe Reader...)
here is a screenshot: http://imageshack.com/a/img716/1672/eif5.png (I am running a scan)

the good point: my computer makes absolutely no noise.. :)

Thank you in advance for your responses!
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