How can i remove trojan horse in my computer?

i have avast antivirus i schedule a boot-time scan and i press repair but an error always occured! is ther any antivirus i can use and free

How can i remove trojan horse in my computer?stinger

If Avast can detect the trojan, it might be able to remove it in safe mode.

To boot into safe mode, turn off your PC, start it again and press F8 during the bootup screen. Then choose to boot into safe mode.

Once in safe mode, do a full system scan using Avast and hopefully it will be able to remove it.

If not, dump Avast and change antivirus' to Avira AntiVir PE Classic and give that a try. It is completely free and has VERY good detection rates. It also uses much less system resources than Avast.

You might need to download some anti-trojan/anti-spyware scanners too.

I highly recommend you download and run;

A-squared FREE - this is very good at removing trojans. It is free and can be downloaded here: http://www.emsisoft.de/en/software/free/

SUPERAntiSpyware: http://www.superantispyware.com/

How can i remove trojan horse in my computer?virus scanner

Check on google. they have a malware scan, I think.
1. Download and run firefox to protect your from future spyware attacks and pop ups which are coming in through internet explorer (Trojan downloaders, win32 ) .Then update your windows through firefox