I'm using Windows 8, but I still tried it. The command caused that a lot of services got disabled at my next boot. This might be also the reason why those two Opera-tasks didn't show up anymore. I still wasn't able to launch Opera, but I could at least touch the files again and remove it. Thanks for the help!

No, I can't stop them in the task manager. This is the error message: http://i.imgur.com/GHLhcux.jpg (I don't have an equivalent in english).
And yes, I have checked my PC for malware.

Thanks for the reply. Sadly I can't uninstall Opera, because it tells me the same message I've already posted here. Furthermore I can't delete or move any opera-related files, because there are always two processes of Opera running after I start my PC. I don't have anything related to Opera in my autostart.

Thanks for the reply.

When I run opera as administrator (I am administrator and the only user on this pc) it still keeps telling me the same message. I've downloaded opera again and tried to install it in the same path (F:\Programme\Opera\ (Windows is on "C:")).
Then I tried to install it in (F:\Programme\Opera_2nd), but the error remains. I forgot to mention that i can't uninstall opera - same message - and that it's not possible to kill these 2 processes I linked in the 3rd screenshot.

Hi Opera-Community,

maybe someone could help me here with my problem. I can't start my browser anymore, since i always get this error message.

http://i.imgur.com/1CGMoYH.jpg (mine - german)
http://puu.sh/juMxg/53519dfd5c.png (english)

I've also googled a bit and tried to boot my pc in safe mode, but i still get the same error message, when i try to open opera.
These two processes are always running.
http://i.imgur.com/nvzm4hE.jpg

It'd be nice, if someone could tell me how to fix my problem.