My computer has given me an error on hl dt st dvdram gsa t20n. Can you please help!

Until you no exactly what has caused the problem you cant fix
click start control panel administrive tools computer management then select event viewer depending on what operating sytem you have this may vary
extend the events there you will see errors in red you will no what exactly what the error was and at what time it occured you might have to uninstall then reinstall the program and its files
you could run the check disk utility
click start run type cmd then type chkdsk/r/f which will scan for and attempt to repair any bad sectors and automatically fix any corrupt files on your hard drive then defragment your hard drive or
control panel administrive tools,computer management ,disk management right click on your drive select properties click tools you should see click check now click start two boxes automatically fix files and scan for and attempt recovery of bad sectors place then a tick in both boxes then select check now,start should schedule this task when restart
or you could download a registry cleaner
also
click start control panel admistrive tools,computer management,device manager scroll down cd dvd rom drives right click you will see options to update driver,roll back driver,or
select properties general troubleshoot, select driver click to reinstall drivers click update driver or uninstall then reinstall
make sure that the cd-dvd burner is getting enough power test all leads that are attached to the dvd burner including electical extensions and make sure they have a secure connection or just replace them there might be bad/faulty or

if this does not fix the problem it might be a registry problem
Close all open programs

Click on Start, Run, and type regedit and press Enter
Click on the plus signs (+) next to the following folders

HKEY_LOCAL_MACHINE

SYSTEM

CurrentControlSet

Control

Class

{4D36E965-E325-11CE-BFC1-08002BE10318}

This folder is the DVD/CD-ROM Drive Class Description in the registry. Look for any of the following names in the right hand column.

Upper Filters

Lower Filters

Upper Filters.bak

Lower Filters.bak
If any of the above keys shown in step 4 are listed, right-click on them and choose Delete

After deleting the keys, close the registry editor
Reboot your computer
Open My Computer and check to see if your CD or DVD drives have returned. You may also want to open Device Manager and verify that the yellow exclamation and error code on the CD or DVD drive is gone.




hope this helps