When Annoying things happen on your PC, Its likely ...
The likely suspect: Spyware
One of the first tip offs that you might have accidentally downloaded Spyware onto your computer is that it no longer functions properly. In fact, if you didn’t know better, you’d think that your computer is having a mental breakdown or going crazy. A variety of symptoms might be showing up on your computer, but most of them will have the same cause- spyware.
How do you know if your computer is infected with spyware? Quite a few symptoms usually appear suggesting this is happening. Look through the list of symptoms here and see if any of them sound familiar to you. Your computer might be showing all of these problems or it might be showing just a few. Either way, spyware is likely the problem.
Slowing PC Performance
Your computer no longer has the quickness that it once had when completing simple tasks. In fact, some of the time your computer simply freezes up and plays dead on you. This happens all of the time, most of the time, or some of the time.
Your web browser suddenly looks different. A new search bar appears or the colors are different. You might even have noticed that using your web browser takes longer to generate new pages. In fact, you’ve probably begun to experience poor search results that turn up websites that really don’t offer you the information that you’re looking to find. Worse yet, your searches for legitimate websites are suddenly being redirected to suspicious looking ones.
Strange pop ups are appearing randomly on your computer whenever you connect to the Internet. These pop ups might advertise software applications or they might even suggest that your computer is infected with dozens or hundreds of spyware infections. Some of these pop ups might look legitimate, but you have your doubts anyway.
Perhaps the computer is experiencing difficulty in booting up or shutting down. It’s acting like a recalcitrant child who doesn’t want to do what she should. In fact, this crazy machine is suddenly making weird noises as it functions.
If a computer is infected with spyware, it usually has one or more of the above symptoms along with a few that haven’t been mentioned. The best strategy that you can take here is to install a reputable anti-spyware/anti-virus application and run it to remove the any spyware/Trojans/malware that has infected your computer.