Is Virus Will Still Exist After Doing A Restore Point

is virus will still exist in a affected files after doing a restore point in the day that the virus affect the file? hmm is doing a restore point is a effective way to avoid virus? now im experiencing a virus that cannot detect by anti-virus, i know that is a virus but every time i scan it with bit defender ,it scans that there's no treat found file that file name is sexy.jpg , xxx.mp4 and autorun (for sure its a virus) its came from flash drive of my cousin i try to scan it but the result was no treat found.when i try to open .jpg files all of my .txt files and installer files was collapse but there memory consume still exist i also try to show hidden files but no hidden in the flash drive.im not thinking of the files now but more i think of what if it affects my files without any notice.