Tsstcorp cddvdw ts l633p error code 19 - Computers & Internet

Code 19 means there is a driver conflict such as two devices trying to use the same resources.

Try this - Control Panel - Device Manager - CD/DVD - double click the device - Driver's Tab - click
Update Drivers (this will likely do nothing) - then RIGHT CLICK the drive - UNINSTALL - REBOOT
this will refresh the default driver stack.

Normally the above will fix that issue if not work your way down through these even if you have done
them before.

Your CD drive or DVD drive is missing or is not recognized by Windows or other programs
http://support.microsoft.com/kb/314060 - a Mr Fixit

The CD drive or the DVD drive does not work as expected on a computer that you upgraded to Windows Vista
http://support.microsoft.com/kb/929461

When you insert a CD or a DVD, Windows Vista may not recognize the disc
http://support.microsoft.com/kb/939052

Your CD or DVD drive cannot read or write media - A Mr Fixit
http://support.microsoft.com/gp/cd_dvd_drive_problems

CD/DVD drive does not appear in Windows Vista, or you receive this error during Windows Vista setup after booting from the DVD (AHCI)
http://support.microsoft.com/kb/952951

CD-R drive or CD-RW drive is not recognized as a recordable device
http://support.microsoft.com/kb/316529/

Hope these help.