Solved Random exe files in task manger

Okay first thing thanks for you help you help me a lot , sec thing my flash driver how should I clear it ? I mean its my only way to make a new installation of win ? third thing most of my wins backup in the same driver with sality so its safe to use it or what ?
 
To make sure your flash drive is clean format it.

It must be clean installation.

Malware experts say that a Complete Reformat and Reinstall is the only way to clean the infection. This includes All Drives that contain following files:
*.exe
*.scr
*.htm
*.html
*.xml
*.zip
*.rar
*.doc
*.jpg
*.pdf

Backup all your documents and important items only.
DO NOT backup any files mentioned above.

Clean installation is fairly easy in Windows 10: https://www.lifewire.com/reset-this-pc-complete-walkthrough-2624538
Back up any personal files EXCEPT for those mentioned above then use the above guide.
In it select Option 2: Remove everything
 
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