I am having the exact same issues as you. Did you find a solution. One thing I thought might have made this problem was transferring a couple songs that I downloaded from Walmart music site. Let me know if you did something similar of transferring something that may have caused it.
every time i turn the walkman on the screen pulses and never passes the start-up screen. it also continously pulses when i charge it and trying to reset it doesn't help either.