Flash, then Macromedia Flash (now Adobe Flash), was introduced in 1996. Macromedia purchased FutureSplash Animator, then re-branded it as Macromedia Flash. While some actions were introduced in Flash...
One possible reason it wont is because the external hard drive might have gotten damaged from being jarred while it was running.Another possibility is that the circuitry in the enclosure has failed...
Its just like most other languages that are compiled you first need to work with an editor tool(ideally one that is capable of compiling the script) - for example the flex editor or any Adobe Flash...