Hi,I am new to online forums, so please bear with me.I recently purchased a HP Pavilion laptop with Vista64 Home Premium which has a TSSTCorp TS-L633L CDDVDW writer.I can burn CD-R and DVD-R but not CD-RW or DVD-RW.If the CD-RW or DVD-RW is made in XP_PRO, I can read them and erase them, but when I try to use them again, Vista will not format them.I have tried Microsoft support, HP support, and Samsung support to no avail.I have tried all of the Windows updates, HP updates, AMD updates (AMD Turion dual core X2 processor), also to no avail. Has anyone else had this particular problem?Regards