Hello my name's Sean and I can definitely get this resolved for you, I have several questions.
Can you tell me when this was working last??
Has anything been spilled or potentially spilled in this?
Have you upgraded or changed your operating system? Such as upgrading from 8 to 8.1 or to Windows 10?
Does any keys function or is the whole keyboard inoperable?
I also need to know the submodel of the E15 as that's a family of machines, for example, Aspire E15 ES1-511 or E5-511p, et cetera, if you don't see that branded anywhere, a S/N or P/N may help me immensely .