Oh, no, no ... I'm not a hardware person.I wouldn't begin to try to take my computer apart and put it back together again!
With replacing the external CD/DVD drive, all I would have to do is follow the cables on this one and replace them with the new ones.Not much different to installing a new printer.I did take a keyboard apart once, because it had a sticky "e". My sister's husband, who has worked for IBM for 30 years, told me to bang it on the desk top a couple of times and that would likely fix it, and it did.
If my computer makes an unusual noise or shuts itself down, I shut down and call my repairman.
I also think that anyone that tells us that he/she knows all there is to know about a computer is full of baloney!My 1994 computer booted itself up at 4 am every morning, like it was on a timer of some kind. The first thing everyone thought of was that someone was trying to hijack it.I said I'd like to know how they could do that when I was unplugged from the phone line!Nobody ever figured that one out.
Thanks again for your insightful posts and for your response.