How Can I Fix My W350i?

I was downloading songs from my computer to my phone using the lead provided in the instruction booklet it says before removing the lead click on safely remove hardware on the screen of your computer after doing this my screen on my phone froze in a blue colour, i took out the battery and put it back in then turned on my phone, this continued to happen. please help. what could possibly be wrong and does anyone know how to sort it out