All my files in ‘My Documents’ and other folders have changed their names into a long code, which ends like this: Av666@weekendwarrior55. I have found a text file from this virus and it says I have to pay 500 dollars, wtf!!! I do not have that much, why the hell it is asking me for money?! I did not do anything bad, and I want my files back, please, can you tell me how i can fix this problem?