Despite the fact that Windows, of course, is the most popular operating system, it is, unfortunately, incomplete.The situation is exacerbated the huge army of attackers create and distribute viruses and other malware.All this causes various difficulties, and the user needs to learn the basic principles of the system to be able to cope with various situations.
Windows system may report that your computer is connected to the unknown device, in three main ways:
1) has just installed Windows;
2) failure has occurred;
3) established a new "iron".
In the first case, Windows displays a message that an unknown device is connected, because the driver is not installed on the main unit (sound, video, etc.).It should be noted that with the advent of Windows 7, this problem has been partially solved.However, it's worth to keep on hand drives the main drivers for the motherboard, video card, chipset and others.
In the second case, the message "unknown device" appears due to the fact that Windows is no longer detect some devices due to a system failure.In this case the risk of serious harm are subject to operating system files.The reason for failure can be a virus attack, a long operation of Windows without reinstalling, a sharp drop of electricity and others. The solution is in three ways:
1) to make a "rollback" of the system to the last checkpoint;
2) to re-install the drivers on the "taken off" the device;
3) to restore the system files Windows (need operating system distribution).
installation of new equipment, as a rule, implies that with him and will be given a CD with drivers.If for some reason it does not, you should worry about installing drivers.
receipt of the notification of the fact that an unknown device is connected, there is quite often.For information on any of the devices connected to the computer, can be obtained from the Device Manager.It is located in the tab "Equipment", which can be found by calling the menu "System Properties."
Sometimes it is not recognized, for example, attached to a computer flash drive."Unknown Device" in this case - this is itself removable media, and the reasons for this phenomenon may be a few.Typically, if it is determined the unknown device USB, should reconnect or to try the other port, as this notification, in most cases is the result of an unstable compound.If the USB port used very often, it can be a bit of pre-compressed laterally connected to a computer cable or the part of the stick that is inserted into the port, to ensure better contact.
However, in some situations, the reason that the computer can not detect formerly running USB-device is incorrect driver settings.To remedy this situation, the user can make a "rollback" of the system or re-install the driver USB.Very rarely, when determining the cause of the system as an unknown device is a physical problem.So do not be scared if a new USB flash drive does not want to work, the main thing - to find and eliminate the cause.
