What appears on the screen is dependent on what kind of PS3 you have. My first course of action would be to download a fresh copy of official firmware and attempting a Safe Mode system installation, either with your old drive or a new, blank drive. That should always be Step 1 before you go for any invasive modifications like a flasher. Since you originally had some text on the screen, that alone leads me to believe that the system memory is not entirely corrupted. What exact model do you own, so that we can determine what kind of memory is on-board?