Sometimes a very strange and out of the ordinary problem will occur on a computer. The problem can be frustrating because nobody seems to know what could have gone wrong. Ask 15 different geeks what they think the problem is and you'll get 30 different answers. When geeks give more than one answer, it means they don't know.
Actually, with some problems it is impossible to know what is wrong just by hearing the problem described. Maybe if you were able to give a very detailed description it would help, but that is not always possible. Such is the case with a disappearing cursor. I've seen it happen and I've see different reasons why. In this article, I will tell you what I've seen cause this problem and hopefully, this will help you get your cursor back.
Of course, you always start troubleshooting any problem by rebooting. With no mouse you'll have to press "CTRL-ESC" and click the arrows up and down and sideways until you get to "restart" on Vista or "shut off computer-restart" on XP. If this doesn't work for you, you'll need to tread on.
Optical Mouse
When an optical mouse goes bad, you will be using it and suddenly, the cursor will just drop all the way down to the bottom of the page. You know what an optical mouse is. It is a mouse without a ball. I hope this is your problem. This problem is easy to fix. Just put on a new mouse.
Exclusive Trojan
Some virus cleaners aren't capable of getting rid of all types of Trojans. A Trojan is versatile malware script. It has elements of both a virus and spyware. When tracking a problem where a cursor just plain disappears, I would run a top flight spyware cleaner. You can get a free scan. So, you can see if a Trojan is present. If so, I would suspect this is why the cursor has disappeared.
This problem, I guess could be another type of spyware, but the few PC's I've seen with this type of problem were caused by a Trojan attack on the dll layer of the operation system. Actually, you don't have to know anything about dll's or layers, just run the spyware scanner. If the computer is really acting up, you may have to go into safe mode with network support to do so.
Of course, after the Trojan is removed, you will have to run a registry cleaner. In fact, if you run a registry cleaner first, you may get rid of the problem, but it will come back. It is the Trojan's corrupting of the registry that makes the mouse disappear. So, however many times you clean the registry, if the Trojan is still running around in the computer, it will come back and corrupt the registry again and there goes the cursor!
New Video Card?
This is a rare one, but I did run across it once. A new video card, though it was Windows XP compatible, was installed in a 2.6GHZ PC with Widows XP home. The problem was, Windows did one of its automatic updates after the manufacture of the video card and its driver. After the card was installed, a driver-operating system mismatch occurred. The video card maker had an upgrade available and the upgraded driver fixed the disappearing cursor problem.
Just because I haven't actually seen it yet, doesn't mean some other kind of driver mismatch couldn't cause such a problem. Probably, it is good idea to have a driver scanner available to prevent such a thing.
In the world of computers, you never know what kind of problem you might run into. Other than having an unusual mouse problem, you should keep viruses and spyware out of your computer; keep the registry clean and the drivers up to date. By doing these things you greatly increase your chances you will never run into a tough, unusual problem. It is fortunate we now have software that will take care of all this.
Source : goarticles by Ed Lathrop
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