okay so all the computers in our school is infected with virus. i inserted my usb and ever since that a folder appeared called "RESTORE" no matter how hard i try to delete it it comes out the moment i insert my usb again. then someone borrowed my usb and when i opened it, the 'restore' folder was still there, then i saw another file called "desktop" and "folder.sfsd" (something like that) and when i tried to erase the restore folder something came out like if i delete it some might not work then 2 files called 'desktop' appeared in my desktop. what virus is thaaaaat? or is it a virus? i already scanned it with norton antivirus and it found 2 threats but it already fixed it but when i scanned again nothing's found. help?