New
#11
What he means is buy a new installation of windows with a legit product key from a legit retailer.
Your Windows is counterfeit so it contains heavily modified code that can act in unexpected ways.
Back all of your important files up and wipe the drive clean, then install the genuine copy of windows and start from there.
Unfortunately Windows costs around £70 which is 85 euros.
If you get any issues after a clean install then we will help.
If you are unsure how to perform a clean installation then here's some instructions.
Clean Install Windows 7