Sansa E250 problem

I added some music to my E250 and everything seemed to work like normal. But after I removed the connection, my E250 will not work. The blue ring lights up but just a blank black screen. Hoping that there’s a fix that someone could tell me about? Thanks in advance for any help.

Had the same problem at one point. Here’s what worked for me:

Thanks for the help Wallebot. Didn’t have any success, so my Sansa may just be done! But if anyone else knows something else I can try, please let me know!