Some kind of virus ate my files!

Hi every one!:D
How are you?

I need your help on this one please, I've already attached the log file :rtfm:

Thank you,

Hi,
pls decribe you problem with more details.

I gave my PC to my sister for a few minutes and when I came back I found that she have installed a software.:O
That :censored: software (virus) crashed Avira antivirus and most of my softwares and they are not running anymore :furious3:.

The attached log shows nothing, pls. make a log of Malwarebytes Antimalware.

Here you go.

[QUOTE=Be Cool;687390]Here you go.[/QUOTE]No, it's info-log. Pls. set the point at Perform Full Scan and press the button Scan.