This post will help you fix / troubleshoot an issue with your Windows PC, where, after login or at welcome screen your keyboard and mouse stops working. This can happen with either a USB interface keyboard / mouse or even with a PS2 Keyboard and mouse. Do remember that your keyboard will work in your BIOS & both your keyboard / mouse will work with a Live CD too. In some cases your Keyboard and mouse will start to work in Safe Mode.
The Methods mentioned herein are based on both the scenarios where your keyboard & mouse will or won’t work in safe mode
Method 1
- Sometime a LAN ( Network connection ) can be a culprit for this problem
- Disconnect your LAN ( network wire ) from your computer
- Start your computer
- Check if your keyboard /mouse are working
- If yes,
- Go to Command Prompt ( with administrator privileges )
- To know how to open command prompt with administrator privilege : Follow this article
- In the command prompt : type ipconfig /flushdns
- Also, use some means to connect to the internet (not on this PC)
- Download and install the latest drivers for your network adapter
- Also, Unplug & non-essential USB /HDMI or other peripheral device & check if your keyboard /mouse work
Method 2
- Enabling Legacy USB support in BIOS
- Enter your BIOS setup by pressing DEL , F2 or F10 ( or any other key which your computer specifies ) (Refer documentation)
- Now, Locate an option that says Legacy USB support and set it to enable
- Also, make sure that your USB speed is set to high speed
- Make sure USB simulation is disabled
Method 3
- Updating USB / Chipset / Keyboard- Mouse drivers
- You can use some other means to connect to Internet
- Download and install the latest Chipset / USB drivers
- Also, if your keyboard /mouse require some specific drivers to run properly, make sure that you have installed those
- You can use Safe mode to uninstall the previous drivers & then boot into windows normally to update the newer drivers
Method 4 ( TIPS )
- Try setting your computer to High Performance in Power Options ( windows Vista, 7 , 8 ) (control panel –> power options )
- Go to Device Manager in Control Panel
- Expand Universal Serial Bus
- Right Click Usb Root Hub (all of them)
- Go to Power management tab
- Uncheck the box that says “Allow the system to turn off this device to save power”
- Click OK
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