magna86
14
There are three possible problems:
- ROM (cd/dvd reader) device does not work properly (e.g. pin does not read the disc or ROM is full of dust …)
- CD/DVD disk you are using isn’t valid (e.g. scratched/damaged disk …)
- PSU’s cable which grants power supply to ROM device might be incorrectly (e.g. does not assign the correct or balanced [I’m not sure what’s the right word in English] power)
It should investigate by yourself what the problem might be.