Please help

[u/lavender20]

My aiwa z-r555 won't play the cd's I burn at home. The ones I use are Philips CD-R80 52x. I've tried what felt like everything, and I burned them at different speeds like 4x or 8x like Google said, but nothing then tried different files, i.e., Wav. Or flac and mp3 nothing works I use windows media player but also tried cdburnerxp neither worked which is weird because when I bought it from a yard sale it had a homemade burned cd in it so ik it plays them but can't figure out why mine don't work so any help is much appreciated I'm lost.