How can I remove a Trojan Adware Virus from inside computers critcal systems?

Several trojan viruses have worked there way into my computers critical systems allowing them to open Internet Explorer windows whenever I access the internet. No antivirius programs have been able to clean or even quarantine it. I can't delete the infected files without making the computer unusable. What should I do?

How can I remove a Trojan Adware Virus from inside computers critcal systems?virus protection

First turn off system restore then do a free online scan with bitdefender is very good at removing Trojans %26 its free.

How can I remove a Trojan Adware Virus from inside computers critcal systems?agv

if its adware do a adware/ spyware remover scan then take it off
Udate your antivirus and scan your coputer in safe mode. After you remove virus, I recommend you use firefox browser. It is safer than IE. It can prevent viruses such as worm,trojan and etc. The newest official edition of firefox can be downloaded from http://www.mollzia.com
Trojans are spyware and malware not strictly virus and as such, must be removed by anti-spyware. Get SpyBot Search %26 Destroy to safely remove spyware. Best of all, it鈥檚 free. After installing it, immunize the computer against over 30,000 known pieces of spyware. Then run a full bot check and remove everything it finds using the Fix Selected Problems tab. Keep it updated and run it weekly to keep your computer free of this stuff. Then get Ad-Aware also from download.com and run it the first time doing a Full System Scan. Thereafter, run a Smart Scan daily.