Hi, i opened my flash memor, and all the folders have an extension of .scr... I did scans using kaspersky antivirus, and Malwarebytes' Anti-Malware, but no viruses were detected...
how can i get rid of them?

Have you tried combofix, try using it in safe mode with all the spyware antivirus trojan removal softwares disabled.. and read the user manual also before using it.
select those files and delete them! then unhide your folders and u`ll find a file called RECYCLER! open it and delete everything!
