blank renders?

hi kinda newbie here, was working on my project and decided to try to render out a quicktime .mov format file i hit my keyboard by mistake just random keys and now my renders are solid black? could someone take a look and see if they could get it working again?? please help. also there is a wine glass that seems to not render correctly ? not sure whats going on with that either

send the file on PM

Without a blend file or even at the very least pictures, it is very difficult to find what exactly is the problem. The only thing that I know that comes to mind that produces solid black renders are internal with no materials. What render engine are you using? What kind of materials do you have?

you can also see if you got the eye icon ON in the youtliner

Check that you aren’t rendering only empty layers.