Computer not recognising DVD Players

I have a 6 year old all in one HP23 desk top computer It has a internal player and I have an external Asus player the computer does not recognise either. They are both there in device manager with the yellow triangle next to them it says drivers are latest versions. My son has tried all the usual things that are listed on the web for this problem but to no avail. Have tried uninstalling the software for the Asus player but when I put the installation disc in the player nothing happens computer does not play it. had to do a system restore to get it back but still not working.When you go into file manager and click on This PC it lists the cdrive and my external hard drives but not the DVD players. Does anybody have an answer for this please.

Have googled "external dvd drive not recognised". Various solutions from Microsoft one of which is to remove unknown devices then run System File Checker tool. User does not say if this solved their problem. Most other solutions offered you have most likely tried.
If you have unistalled this drive does the pc recognise " new hardware" when plugged in? sorry don't have exact solution.
George
If you have unistalled this drive does the pc recognise " new hardware" when plugged in? sorry don't have exact solution.
George

The fact that the computer doesn't recognise your player when you plug it in suggests to me that it is the player that is at fault not necessarily your computer. See if you can get a friend to try plugging the player into their computer and what the result of that is. Does your computer recognise other 'plug and play' gizmos? I plug my camera, my sound box and mouse (to charge it) into the computer but they all have to have their own lead - not any usb will work.

I have other devices plugged into the USB connections such as 2 printers and a scanner also 2 external hard drives all working perfectly, and I connect my camera via USB What I find strange is that both dvd players have gone down at the same time but they show up in device manager with the yellow triangles indicating a problem but do not show up when you click this PC in file explorer as they should. My son who is quite good at this sort of thing has spent quite a few hours trying to sort this out to no avail. He is now thinking that as a last resort we should put the computer back to factory settings but has warned me that this will take some time and he is still not convinced that it will solve the problem, so I could end up with a computer that I could not use for installing the software for all my devices and programs. Also have tried unplugging all USB devices with no difference you can hear both players trying to start automatically when you put a disc in so mechanically they are OK.