Incredible circle boot

[Saxton6666]

Hey y'all, My Incredible of 1 1/2 years has decided not to boot. It just goes through the two HTC screens and then the droid eye and repeats. I have read here about different solutions but I haven't found one that will correct this issue. I have lots of data; contacts, music, AK notes that I don't want to lose if I perform a factory reset. Does anyone know how to back up a phone full of data if it won't boot? My pc doesn't see it. Thanks in advance.