How can I remove a computer virus?

Original title: my computer is infected! Virus is unknown and I can't do anything to get rid of him! Help, please!

This morning I went outside have certain documents printed in a local café. When I put my flash drive to the guy in the printer, I noticed something strange when it is plugged into your pc. When you open the windows disk rather than see my files and folders, that he opened with a single file - a shortcut file to be exact (noticeable by the arrow under the icon). The man seem not to be bothered by it and even double clicked on this shortcut until a new window opens showing now all my files and folders intact. If printing then. When I came home, I quickly checked my flashdrive immediately to plug I noticed that Avira blocked an autorun to start the disc. I know now that there is a virus because there is no software loaded on this flash drive (its nothing more than only 2 GB of removable disk space)... I scanned the entire disk and Avira detected nothing. It's weird because my av definitions are up to date, so I decided to change the point of view of file and unchecked "hide os important issue" and here he showed... by opening the disc, I saw a file autorun.inf along side another file unknown and invisible, sitting beside her... two of them is located next to the shortcut file visible. All my files and folders when moved to a folder super hidden in the disc... As a first step, that I do not have the trouble that I decided to delete these unknown files and split my files back into position and resume my day but when I arrived at the Home Office, I fell on my younger brother copy videos to a flash drive he borrowed from a friend and to my horror , I saw that the drive has been infected by the same and a fraction of a second before I can say the word ' Don ' t! "my brother click on the shortcut. A new window opens with the videos that my brother wanted to so eagerly watched. After that, I checked on the pc by plugging into an own flashdrive (my flashdrive office) and voila... He has been infected by the virus... as I've noticed that when I unplugged it and place all my files and folders disappeared and has been replaced by the single shortcut file. Alarmed... I did a system scan with avira and after an hour, it failed to detect the virus... I downloaded the scanner and still... He found nothing. I plugged an other flashdrive clean and as expected some virus infected, energetic, he. I've packed all these unknown files, including the autorun.inf in a rar archive and downloaded on virus total... all 40 scanners + alone... and I mean only ONE av (1) came in positive for... It was of dr.web... I was devastated... my pc is infected by a virus that spreads via removable drives and all leading anti-virus could not detect it... Please help me! Dr.Web he calls like Trojan.MulDrop4.25343... What I find really horrible, it's that I just couldn't find a way to stop it... I tried to find the root of the virus among the automatic startup items but this is not... I have tried disabling everything in msconfig (except microsoft services) and its still the same after I restarted the... Help, please

I used Kaspersky Virus Removal Tool 11, he deleted some virus of the model and the flash player, now, everything seems OK.

Tags: Windows

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