My Father has somehow managed to get his brand new Win 7 64 bit PC infected by the Tango.exe trojan He assures me that he has been careful with his download sites !! I have searched for this nasty and have come up with no simple way of dispatching it Short of rebuilding his PC again - is there a removal tool to help ?

The infected executable name (in this case tango.exe) has no importance - the useful information is the trojan/virus family. Download MalwareBytes Anti-malware install it and run a scan. Install the free version - that is enough for one-time use.

OK - Downloaded, installed MALWAREBYTES and full scan run - nothing picked up Every time the computer is switched on a panel appears. It says do you want the following programme from an unknown publisher to make changes to this computer? Programme name Tango.exe. Of course the answer is "no" and when this choice is clicked the panel disappears. Tango appeared from nowhere..... Tango is not a program in the add/remove programs nor on the program list When googled - it appears that others are having a similar problem AVG and MS Security Essentials (installed and run independantly) pick up nothing too !!

I'd also recommend running the eset online scanner http://www.eset.com/us/online-scanner/ Thanksa - that got rid of the pesky trojan !!