Weird error , seems like some part of the memory is still having information about the writing , where it instead should have done something to the reading part.
Nice trick to test this is the following :
1 : Write cd
2 : Reboot pc
3 : Read cd
If the same error still applies , it's quite clear it's not a memory related thing. Perhaps your drivers , resident programs and/or virusscanner is annoying the reading process ?