TO DOWNLOAD DRIVERS FOR LG GSA-T40N MULTI DVD REWRITER

Windows XP/Vista/7 should automatically use its own drivers, so that you can read from CD/DVD disks.
You'll need "extra" software if you want to play a DVD-movie, or if you want to write CD/DVD disks,
e.g., 'PowerDVD' to "play", and Nero Burning to "write".

CD/DVD Driver is Operating System generic. i.e the Operating System will install the Device Driver for the CD/DVD Drive. If CD/DVD Drive is having yellow exclamatory mark in device manager, then you should delete the Upper and/or Lower filer from registry.
-->Please press Windows+R key to get Run command.

1. Type regedit, and then click OK. Collapse this imageExpand this imageIf you are prompted for an administrator password or for a confirmation, type the password, or click Allow.
2. In the navigation pane, locate and then click the following registry subkey:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
3. In the right pane, click UpperFilters.
   
   Note You may also see an UpperFilters.bak registry entry. You do not have to remove that entry. Click UpperFilters only. If you do not see the UpperFilters registry entry, you still might have to remove the LowerFilters registry entry. To do this, go to step 8.
4. On the Edit menu, click Delete.
5. When you are prompted to confirm the deletion, click Yes.
6. In the right pane, click LowerFilters.
   
   Note If you do not see the LowerFilters registry entry, unfortunately this content cannot help you any further. Go to the "Next Steps" section for information about how you can find more solutions or more help on the Microsoft Web site.
7. On the Edit menu, click Delete.
8. When you are prompted to confirm the deletion, click Yes.
9. Exit Registry Editor.
10. Restart the computer.

Go this this website

http://www.bioticaindia.com/gsa-t20n.html

Download the drivers.

Once the file is downloaded, then double-click on the file. It will then install itself on your computer.

Once it is done being installed, then restart your computer. And then you can use it.