please let me know the size of G drive and whether this happened after windows updates

Try this one
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Yes, IE is one of the features on Windows OS so it isn't a matter that it is running in the background but if you don't like it then you can disable it from the Windows Features showed on the above...

it will be reinstalled again automatically , if in case it doesn't work then you can try the On-screen keyboard from the lock screen window ( Ease of access -> Onscreen keyboard )

Have you tried to roll back or uninstall the keyboard Driver from the device manager ?

Thank you for explaining your concern.
Just to confirm, are you using the built in keyboard on your Laptop or else a Wired one ?

If it is wired one then please check whether the keyboard is...

May I know which keeps are not working ? and what exactly happens when you type on your Laptop keyboard ?

Use the F12 option on the below link to get the windows 10 ISO link ( Home / Pro ) without the MCT
Download Windows 10 Disc Image (ISO File)

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M5A97 R2.0 Driver & Tools | Motherboards | ASUS USA