You need to check your bios for any "legacy" setup for your DVD drive or at least review that as a possible cause. -OR- play with the setting to see if any improvement takes hold. Of course, save the bios changes before exiting out. The same for the FD error 40, be sure it disable for *any* floppy being present, or none.
The above answer is an attempt to fix the system provided nothing is wrong with the DVD drive. If nothing seems to correct the problem, then a new drive will have to do. Considering all the hassle it may cause, its a proper course of action, just replace. If possible swap cables and/or reseat them several times and be fully seated.
Last, because you say your changed system cases and I suppose the mtrbd., the whole 9-yards. its best to inspect and check the mounting posts and/or screws, etc. to see if all is proper. Its been known to not place a mounting post in right location and short things out. I say that, because if you had no problems until you swapped cases, then you maybe bypassing the root cause, the case itself and/or improper build, sorry.
Hey all, first issue I have is with my DVD-Lightscribe drive. It's an Asus DRW214L1T, and I've been having several problems with it lately. There are certain times when it will not be detected by Windows on boot, and sometimes this can freeze the entire system. Secondly, it will prevent Windows from starting if I boot up the computer with a disc inside the drive. If it's empty on boot, it usually causes now problems. Any advice on this? Should I just invest in a new drive and call it good?
Also, I recently upgraded my PC case and moved everything over. All went well, except now when I boot the PC and the initial boot menu comes on screen (eSATA drives etc) I get the message "Floppy Disk Fail (40)" and have to press F1 to boot. I have disabled the floppy drive in the BIOS menu, as I don't even have one... so why it's doing this in unknown to me.