I'm having great difficulty turning my phone on it loads then the logo comes on and then it goes to the blue ribbon loading screen it does not get past that I've tried all options I know including plugging the phone into a computer to go through the Sony PC companion software this provides no results I've tried soft reset pressing volume up And power at the same time this does nothing occasionally I get one vibration expected another three vibrations to initialise reset mode this did not happen have tried several times with no avail
Even people who know Sony devices may struggle to help as you don't mention the particular model.
Anyway, the most important question is: Have you made a backup? If it's failing to boot, you're very likely to end up at a factory reset situation. If there's anything on the device that you need to keep, you will struggle. I'm pretty sure that the o/s needs to have loaded before it will be seen as a USB drive by an attached computer.