CD/DVD driver for Tohshiba a300 not functioning.

Yes, sometimes see this error, you need to just replace data cable and also you can check it with another CD. Secondly, you can update CD/DVD drivers to solve this issue.

Good Luck

Try to upgrade the driver for the DVD player. This is done in the Device Manager.
Upgrade or reinstall the software used to play the DVD.
One of the best players for DVD and all sorts of other media is the VLC player - a free download.

Please rate fixya answers.

here ya go

http://www.officialdrivers.net/toshiba-drivers.php?gclid=CJip5OKvpJsCFQ4MDQodWCAtCg

The light from DVD laser has a smaller wavelength (640 nanometers) than the light from the laser in a CD (780 nanometers)

A DVD/CD player has different laser beams. So if one is damage, the other can still function. In your case, the DVD laser beam/lens is probably damaged. It is hard to repair the problem and DVD reader/writers are cheap these days that it is better to get a new than to repair your old one.

Try cleaning the lense / As well install correct driver also; If nothing works out best alternative is to replace the CD/DVD rom with new or working once.

If you are using Windows 98, 98SE, ME, 2000, NT or XP, and have an ATAPI/IDE CD/DVD drive, there is no driver needed (see Toshiba statement I have posted below). Under no circumstances, if DVD is properly installed and functional, will you need ANY driver!

If your DVD drive is a SCSI drive, then it may need drivers specific to the SCSI card you have installed (see the specs/manual or website for your card). You may also need the Adaptec SCSI setup, available at this address:

http://www.adaptec.com/worldwide/support/suppbyproduct.jsp?sess=no&language=English+US&cat=%2FTechnology%2FSCSI+Software&fromPage=driverindex

or use this address if you have a LOGIC based SCSI card or device:

http://www.lsilogic.com/

Now, if you meet the criteria for the first paragraph I wrote, and your PC does not load the driver automatically (after a reboot or two) then you have a PHYSICAL or HARDWARE problem. Either the DVD drive is improperly cabled, improperly installed or defective.

Those are all your options. See below, from Toshiba website
good luck
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http://sdd.toshiba.com/main.aspx?Path=ServicesSupport/DeviceDrivers

ATAPI CD-ROM and DVD Drivers

Toshiba's CD-ROM and DVD-ROM drives do not require any unique device drivers for Windows '95/'98/2000/XP/NT.
After installing your drive and re-booting, your system should recognize your CD-ROM or DVD-ROM. Win '95/'98/2000/XP/NT Operating Systems support all Toshiba ATAPI CD-ROM and DVD-ROM drives natively.

DOS/Windows 3.x Device Drivers

This device driver is to be used with DOS/Windows 3.x operating systems. Do not use this driver with Windows '95, Windows '98, XP or Windows 2000 unless you are going to use your system in the REAL or MS-DOS Modes. Device drivers for Windows '95, Windows '98, Windows 2000, XP, OS/2, and NT operating systems are provided with the installation or setup software of each operating system.

DOS ATAPI Interface Driver
If you prefer using DOS click the link below to download a MS-DOS ATAPI interface driver.
atapi.exe

SCSI CD-ROM and DVD Drivers

SCSI interface drivers are written for the SCSI card you are using in your system, by the SCSI card manufacturer. They are not specific to your Toshiba drive and are not provided by Toshiba. If during installation Windows can not find the correct SCSI software driver for your SCSI card and you do not have the software driver that came with your SCSI card, contact your SCSI host adapter manufacturer.

Adaptec SCSI Drivers
LSI Logic (Symbios) SCSI Drivers
DVD Viewing Software

Toshibas DVD drives require a third party software to be installed in your system to enable you to view DVD movies. If you purchased your drive as part of a kit, the software may have been included. The links below will provide some possible solutions should you not have this type of software.

Nero6 (Toshiba recommends)

Toshiba does not recommend nor endorse any of the following manufacturers software products. Software names are provided only as a courtesy to our customers. Please check with the software manufacturer to assure that their software supports your drive model.

DirectDVD
Cyberlink PowerDVD
WinDVD
Media Burning Software
Toshiba's recordable drives require third party software to be installed in your system to enable you to burn media. If you purchased your drive as part of a kit, the software may have been included. The link below will provide some possible solutions should you not have this type of software.

Nero6 (Toshiba recommends)

Toshiba does not recommend nor endorse any of the following manufactures software products. Software names are provided only as a courtesy to our customers. Please check with the software manufacturer to assure that their software supports your drive model.

NTI CD & DVD Maker
Gear DVD & CD-RW
Roxio Toast (Macintosh)
Easy CD Creator
Stomp Clinkn Burn Pro

yes..it's most likely kaput. I have a tecra, and I'm on my second CD/DVD replacement. They are easy to find and replace(one screw underneath, and just slide em out)..

the 1800 series probly doesn't recognize cd-r discs. The composite out requires a driver which may not be loaded.
Good luck