LG Burner Error?

Hi I am looking at a persons Dell 5150 and she has an LG DVD Burner.

In Administrator Tools/Event Viewer/ System. it shows cd rom error 7, 11 & 7023 can any one tell me what could be causing it.

I should explain that I am a volunteer worker who fixes computers for free for disadvantaged people if I can, if not they will have to take it to a computer store.