Accidental Computer Software?

So if DNA is too complex to have “evolved” over a series of accidents, what in fact created it? Maybe I can explain it through this example… You can compare the amount of information stored in one human’s DNA to a computer program like Windows. Thousands of software engeneers have been working on the computercode for the Windows software. Can you imagine an equivalent amount of information being stored in every single cell of your body and this coming into existence from something as random as a series of accidents?