I guess all CD and DVD burners have a flaw.
I experierenced sound like a gun shot one day with the system halted. I couldn't restart it for a simple reason.
The DVD reader/writer had a defect stopping the CD drive motor. Fragments of an exploded DVD were the reason why the device tried to read the DVD stopping the Windows load sequence.
I opened the tray using a thin pin and removed the leftovers of the DVD looking like shrapnels.
The device was exchanged for a new free one, but the DVD was lost.
I also know that higher speed (reading and writing) requires more laser power, but I've never seen a CD (DVD) reader/writer without laser diode.
This is what was stated here.
Boncuk