I don't know how does it start,actually..
I use PIONEER DVD-RW DVR-217..My pc hasn't been a year..
It's unable to write any DVD,and maybe CD too..
I check in divice manager..and it says:
Windows cannot load the device driver for this hardware. The driver may be corrupted or missing. (Code 39)
if uninstall and reinstall the device can fix this problem??
I couldn't find UpperFilters.bak and LowerFilters.bak, so I just delete the rest of two..
And..It works.. ^_^
Actually,I want to know why? what make this problem?
Thanks for the solution..that's very kind ^_^