Can a computer become virus infected and the installed antivirus program not detect it and if so how can this virus be removed?

Answer 1

Yes, in the hacking world it's called FUD (Fully Undetectable) If the virus is FUD then it simply means that no anti-virus can detect it (however viruses don't stay FUD for long)

Viruses can also disable your anti-virus without you knowing it so that you think the anti-virus is scanning and working properly when it isn't.

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You can't delete a virus and you can't take it out when it is in your system. You have to get an adapter and a USB cord so you can run the Anti-Virus on another computer. Note: the internal hard disk is to be brought out and attached to the adapter and the USB cord and have the Anti-Virus run on it from another computer. Hope this helps!

Yes, that's possible. First of all, there is no single antivirus-program, i know of, that will eliminate every virus that has ever been made. Secondly, antivirus-programs are always step behind virusses. That's because there first have to be a virus, before you can develop a method to eliminate it ..... This development is always hours (or even days or weeks) behind ....

However, the change of having a unknown virus is virtually non-existing. If a virus becomes known, there will be a solution for it in (almost) every antivirus-program!

If you think, however, that you have a virus and your antivirus-program can't find anything wrong, then do a additional online virusscan (f.e. with the online virusscanner of Trend Micro: housecall.trendmicro. If you're still declared healthy, but you're still suspisious, surf to one of the many antivirus-forums that are excisting all around the world ..... Or place your question here, at FaqFarm ....... Like you did ;-)) :-))

Good luck, Jahewi :-)

you must be advanced user of PC if you want to delete it manually. like using of folder option that reveals the virus content, killing unknown process using task manager etc....

To remove viruses run your computer in safe mode by tapping f8 on bootup. Then run and install Malwarebytes. Do a full scan and quarentine the viruses. Restart the computer in nomal mode and install superantispyware. Run a scan in that program and then quarentine all items. An optional third opinoin scan you can run is dr.web cure it. Install the program and scan. Quarentine all items. By this point your computer should be virus free.

Solution:

1: Create restore point and take registry backup.

2: Delete all temp files.

3: Delete all unwanted software's and security software's from add/remove program.

4: Disable all unwanted services from startup and then remove from registry.

5: Reset internet explorer and then register all .dll files.

6: Scan with spyware removal malwarebyte,hijackthis and trojon removal.

7: Check windows update if found and then download and install.

8: Defrag C: drive

9: Restart the computer, and then check it.

10: every week update and scan spyware and virus removal tool.

But it doesn't really work i have tryed it and if you get a free anti virus, they will go out of date and the fire wall protection is turn off.. and that allows a virus called, Trojan virus to come on to you comoputer..

To stop that problem you go to- my computer and you look through all your documents and delete EVERYTHING! That is how they get on there and take over everything and leave you screwed!