When did this happen, after an update, after you downloaded a cheat ?
You might want to reinstall the game.
didnt download anything , i think my skyrim folder has virus since i just copied it from my old HDD .
this is what VirusTotal says : https/www.virustotal.com/en/file/ebc7de99048a2a9c0e85f4901a6aea3bdcfdecb7f9e5da15956867bc8970540a/analysis/1399390508/
any fix / solution that i can remove these . virus / works from my computer ?