Problems encountered in daily life often spawn new business concepts. But few problems are as severe as those encountered by Brady Essman, the 36-year- old president, CEO and founder of digitalmedix, an Englewood-based data retrieval and computer forensics firm. Essman’s story began with a crashed hard drive that resulted in critical sales information being lost. Essman subsequently lost his job with a storage technology company. A divorce followed. And while there may not be a direct line between a dead hard drive and a wrecked marriage, Essman’s world came crashing down in the spring of 1998.