Does this sound familiar to you: From one day to the next your PC runs slower than normal, pop-ups come out on its own, you get redirected to some commercial sites surfing on the internet, programs installed on your computer don't work anymore?

Then there is a good chance that your PC is infected with a Trojan virus. In most cases Trojan viruses get access to your computer through downloads from the web or some dubious e-mails.

When you run the downloaded program, it unloads other hidden programs, commands - without your knowledge. Here is what Trojan viruses or Trojan horses are supposed to do: they are used to outwit protection systems in effect creating a vulnerable system to allow unauthorized access to your computer. In other words: Trojan viruses can allow hackers to get access to your passwords and credit card numbers! So you have to take action fast.

Maybe you already have detected a (or some) Trojan viruses with an antivirus program. And probably you already have deleted (or tried to delete) the infections your antivirus program has found, but the mentioned symptoms are still there. But it's not that easy to remove a Trojan virus. Even if it looks like your system works like before, the Trojan virus might still be in your system - and you don't even notice!

It might even be the case that you have tried to delete some suspicious files manually - without success (unless you are a computer specialist, never do that as you might delete important files that you system needs to run properly). Here's the reason why this in most cases doesn't help: registry entries could also have been modified by the Trojan and this is an area most people don't check up. Maybe for their own good, because deleting the wrong files here can lead to severe system-damage.

In case you wonder what a registry is: the registry is a directory which stores settings and options for the operating system. It contains information and settings for all the hardware, operating system software etc. Whenever a user makes changes to Control Panel settings, file associations, system policies, or most installed software, the changes are reflected and stored in the registry.

But how to remove a trojan virus in a safe way? The big problem here is that since Trojan horses have many different forms, there is no single method to delete them. If you use a normal antivirus program, you can never be sure that the Trojan horse was deleted completely.

To avoid this, I can recommend NoAdware. With this program you can safely remove Trojans Horses, harmful adware, spyware, dialers and worms - and avoid the risk of losing your private information like credit card numbers, passwords aso. if your system is infected.

I wish I had this program on my system from the beginning and could save all the time I wasted trying to delete the Trojan horses on my own and posting my problems on online forums - and the bad emotions. You can download and try NoAdware here for FREE.

P.S. This is what you can try at the beginning: clear the temporary internet files/ delete them manually.