Hi there,
That depends on the Virus type. Viruses have many types like trojan horses, worms, bohos, bootkits, rootkits, spyware, adware, etc.
Formating is much related to the file system. Quick Formating resets the file system lead-out so the host os assumes no files on it ignoring the fact the file is wiped or not. Standard Formatting will wipe the file too or override with scramble data.
You can try the Windows Malicious Software Removal Tool 64-bit and see if that is helpful
https://www.microsoft.com/en-us/download/details.aspx?id=9905
--If the reply is helpful, please Upvote and Accept it as an answer--
I have sympthoms :
Someones is just playing with my computer.
-restart my pc
-eject my dvd writer
-close processes
-installs programs without I even notice
-stops my internet
-delete the Windows system files
-hide tray icons
-pc is so slower
And don't have a sample of the file.
Thanks.
Are you using Microsoft Account or Local Account?
Is your PC part of a company network or home PC?
Try run Windows Update and download and install all updates.
Have you perform a full scan with Anti-Malware program?