Fantastic!
I tried to write a similar story in university:
step 1) The scientist is born.
step 2) The scientist goes through the time machine, and kills his grandfather.
step 3) The scientist is not born.
step 4) The grandfather is not killed.
step 5) The scientist is born
step 6) The scientist goes through the time machine, and kills his grandfather ...
(the timeline replays in countless variations, like Groundhog day) ...
step 39,834,234) Eventually, (possibly quantum) variations in the loop will produce an unlikely event, ie, the scientist dies, the time machine fails, etc.
From the outside perspective, the scientist was never able to achieve time travel, and the proliferation of nasty accidents around time travel experimentors would seem like some sort of "Physicist's Curse".
Eventually, that was adapted for a Neverwinter Nights module, where dragons were wiped out thousands of years ago, and a young magician is trying to bring them back (thus creating a paradox in history) and a similar "time loop" where you must redo the same day over and over until you stop the magician from creating the time portal.