Laptop USB interface Suddenly do not recognize the mouse keyboard what to do

Today, with a USB cable Connection notebook and mobile phone, the mouse pointer suddenly does not move, how to shake the mouse is useless, external keyboard is not used, keyboard lights are extinguished. I think it is bad, had encountered two times before, did not find a solution, the final is to reload the system to solve. The first two times, once at home, once in the school, are connected to the mobile phone when this problem, although I do not know why this, but tried the internet to say that the various methods, are not resolved.

The reload system takes too much time and energy, and it can take several hours to finish the work. This time really do not want to reload, think carefully, this question is a bit strange, even when the USB phone, suddenly cause the external mouse keyboard can not use, but U disk and other devices can continue to use. Obviously, there is no damage to the USB driver, which is certainly caused by other problems. With luck, and then Google search for a while, suddenly found a previously did not use the method, decided to try.

The method is simple,

Direct shutdown, unplug the power (the battery does not take off it does not matter), and then wait, connect the power, restart on it.

Notebook does not recognize keyboard and mouse

To confirm that it is not a hardware problem, the notebook will be turned on after F2, the result is to enter the CMOS, the removal of the keyboard hardware damage may be. After the boot is set to disc boot, insert 2000 installation disk to repair, but the notebook is too old, the optical drive has been unable to work. May wish, with the mobile hard drive installs, haha, smoothly enters 2000 installs the interface, looks like this USB is good! Select Repair installation, go! Well, what's going on? Tip 2000 system does not install properly! Retry n times after this is still the hateful hint. Reluctantly had to prepare to format the reinstall. First, back up the important documents for your co-workers. A lot of files need to be backed up in DOS, it's really a huge project. After the backup, try to repair with the hard disk version! Haha, yes, this time did not meet that hateful hint. To be repaired after the installation, restart, a few people open eyes looking at the screen, that cute mouse finally came out, try a keyboard, OK, fix!

Through this incident, we have summed up some experience:

1, the USB device to correctly plug.
2, important documents must be a good backup at ordinary times.
3, the old computer best to save a system backup! Case.

Summary, if the above methods can not solve your problem may be the computer USB interface is broken or the mouse keyboard has problems, we can change the other normal machine on the mouse keyboard come and try.