my virus detecter found a downloder and said its a medium risk wat is it,thanks
???
Which is your virus detector? avast?
Why don’t you send the infected file to Chest?
After that, post the name of the file (name and path) and the name of the virus 
A downloader tries to download malware from the internet and install it on your computer. You install run the downloader Trojan horse, which contacts a web site and downloads more spyware or other malware. Some downloaders may take advantage of software vulnerabilities to run even without you clicking on a file: a so-called drive by download.