DVD RW DVR-K16 does not recognize blank DVD-R

Dial +1-800-204-4427 and Get end of support information for Windows XP and find out what you need to know to upgrade to Windows 10 or find a new PC.

Try using this Microsoft tech article, manually edit the registry.
http://support.microsoft.com/kb/314060

I found it

http://www.driverscape.com/download/pioneer-dvdrw---dvr-k17b-ata-device

gustav94I have the same dvd player and had the same problem, I just couldn't read my data cds and it was so frustrating windows kept telling me the cds with data were blank, i searched thoroughly over the net for an answer but most involved registry mods or flashing the firmware which could bog your dvd for life.
I was about to give up and get a hammer and whack the computer when i decided to get a dry cotton bud and gently wipe the laser lens of the dvd player, and guess what?
my good old data cds were being read!!!
kudos to classics.

www.findmysoft.com/drivers/Vaio-VGN-BX394VP-Pioneer-DVR-K16-Update-1-10-firmware-driver.html , free download your driver cd in the above website

Normally no drivers are needed for CD drives other than the ones built into Windows. It might be a dirty lens that is causing the trouble. When the tray opens on a laptop CD drive the lens is exposed and can get touched or exposed to dirt. Try gently cleaning it with a cotton swab to brush off the lens. If the problem continues, the laser may have worn out and is too weak to read now. You can find replacement drives online, or use a USB plug-in external drive.

you have to reset your region code.a good technician or even the pioneer care can reset the codes in few minutes. you also take your user manual which is must.

you may need to clean the lens of drive with a wet tissu paper, otherwise the drive might gone out of order, need replacement.

google dangerous brothers, they have a catalogue of drivers,
use at your own risk

I am asuming your using XP, this happened to me a few years ago, i searched google and found a forum that had instructions on editing a registry key to fix the problem but i wasn't able to see the drives in the device manager at all, so check that first and make sure they are there and try reinstalling the device drivers,using windows update or manually search for newest version of the drivers, if all that fails try reinstalling the applications your having issues with, if that fails you can try getting another application to replace the ones that aren't working, try alcohol 120% or Nero, those are about the best out especially a120 however it would require a purchase.