cdrom error when attempting to use ISO

i have been using epsxe for a while. However I haven't touched it all over the summer until now. When I tried to run an ISO instead of playing (as was usual) i got an error: cdrom not found.

i'm not using a CD rom.

at first I thought it was because when i first started it up i accidentally did "run CD rom" and it made the error. i said "oops" and put "run ISO" and it did the same error. I then restarted but it still continues to do the same "cdrom not found" error.

However, i can go and check my memory card just fine (you know that blue and pastel memory card screen)

i searched the internet and the forum for a possible solution and have come up empty handed. does anyone know what I should do?

thank you in advance.