There are a number of reasons why your device drivers might be malfunctioning. If the drivers fix your keyboard, uninstall them and re- install them.
Why keyboard suddenly Cannot type?
If you want to update the device drivers, do it now. Connection issues between your keyboard and your computer can be caused by a corrupted or out of date device driver. The device driver needs to be updated. If that doesn’t work, you can uninstall the device driver and try again.
The keyboard is locked if you press the keys together.
How do I unlock my keyboard on my computer?
To open the keyboard, you need to hold down the SHIFT key for 8 seconds and turn off the Filter Keys from the Control Panel. It’s possible that you’re using a wrong keyboard layout or that you’ve turned on a password.
How do I turn my keyboard back on?
The only thing you have to do is press the ctrl and shift keys at the same time. You can see if it’s back to normal by pressing the quotation mark key. You can shift if it’s acting up. You should be back to normal once this process is over.