Quick version:): The BIOS contains key settings which determine/insure functioning of the computer.
It provides options for various settings...one of these settings involves the recognition of drives which are attached. Some BIOSes read attached hardware automatically, some have to be manually reset when hardware changes or is added/removed.
When having issues with drives, I start with the BIOS recognition of the drives attached to the system...and verify those before moving on.
Howstuffworks How BIOS Works - http://computer.howstuffworks.com/bios.htm/printable
How to get into your computer's BIOS - http://www.cyberwalker.net/faqs/reinstall-...enter-BIOS.html
You need to verify that the dh16a1l is properly reflected in the BIOS, as Step One. Skip all that for the moment, please.
What are you trying to read (data files, music CD, etc.) when you get this Application Error thing?
The application error message should only appear when another app is brought into play...what files are on the media which you tried to read?
It's not the drive that prompts such message, it's the contents of the drive.