Trolly got a virus

It's very amazing how the spam mails comes in various shapes and sizes andof not weird but similar colors and attractive writings when just you accidentally mentioned your email id in a public website.My mailbox do get such unwanted mails from trolls and i was always careful not to open them. Suddenly my AVG antivirus alerted about a threat Trojan generic aspv10kinda thing. I carefully moved it to the vault.
Then i scurried through some details about the famous trojan in the net.Some said it mainly affects the wireless network and some said it was the worst virus that you go to woods and shoot down your tower. I was very worried in a state of oh no what 've i done.
Then i downloaded the trojan virus scanner and scanned the whole lot. Fortunately it declared there was no virus detected.These kind of trojan viruses can be detected by their file bytes and sizes cos they take the form of the original file. Now its a catch22 situation where i couldn't either delete the file which i suspect to be a virus cos it is one of the important file required for booting.
It it was not a virus and if i had deleted the file then my system would not boot..end.If its a virus it'll run on boot ...end.
Later i came to know that sometimes AVG antivirus makes a mistake indetecting the trojan virus files.So the best thing to do is pray that its not a virus and ignore the alert or threat.