Keyboard Reassigning Keys

[Wrangler3]

The "A" key on my friend's laptop has given up. Is there a simple way to allocate these "a" letters to another key?

[mushroom25]

use the corresponding "ASCII" code....

http://ascii.cl/

[bhg481]

Have you tried prising the key off and blowing or brushing?

[TheChair]

He could install AutoHotkey, and program some other combination to output the "a" and "A".
https://autohotkey.com/

Personally, I'd just get a USB keyboard.