Keyboard & mouse not working not not at the login screen.

I have Windows7 64 bit installed on my machine. I can't use my keyboard and USB mouse to the login screen. I tried to boot the system in safe mode, but I am facing the same problem here. When the login screen if poster my keyboard freezes and if I press num lock does nothing. My mouse stops on the login screen. I don't want to reinstall windows as it will scan all the settings I have on my machine. Is it possible to solve the problem without having to re - install windows. I tried to fix the problem using my installation disc, but I couldn't find the solution.

Hi Philippe,.

I suggest you to disable and re-enable the USB controller and check if it helps.

Use Device Manager to disable and re-enable all the USB controllers. This allows controllers to recover the port USB of his condition does not respond. USB controllers represent the USB ports in Device Manager.
 
To disable and re-enable the USB controllers, follow these steps:
a. Click Start, type Manager of devices in the search box of start and press ENTER.
b. expand Bus USB controllers.
Note that you have to scroll down to find this point.
c. the first USB controller under Bus USB controllers right click and then click on uninstall to remove it.
d. Repeat steps above for each controller USB is listed under Bus USB controllers.
e. restart the computer. After the computer starts, Windows will automatically check for changes on the hardware and reinstall all USB controllers that you uninstalled.
f. check the USB device to see if it works.
 
Also, try updating the chipset drivers on the computer manufacturer site.
 
Thank you.

Tags: Windows

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