You tried another keyboard? Got the same thing?
This is a laptop? How old is it? Details matter.
When yup do press said keys several times, what happens?
Did you buy it in Pakistan? Or Myanmar ?
Has there been any other evidence of a physical failure? Did you drop it?
You did ask about software. Normal software does not remove standard keys. Have you or anybody else been experimenting with
Auto-Key or similar keyboard modification software?
f it is a virus, that is a new one for sure!