So this is where we can't go any further without more information on your system.
There is a section at the left bottom of your post window that says "My System Specs" > click that, then click "Update my System Specs" and fill that out the best you can to start.
Is this PC a desktop or Laptop?
Home Built or Store Bought (Brand & Model #)?
Is the error triangle on the hard drive(s) or just the CD/DVD drive?
If it's the disk drives then I'm guessing that you will need to install the chipset drivers
for your system, but where you would get them and how you would install them or even if they are indeed needed depends on the answers.
If it is only the CD/DVD drive then you could have the UpperFilters issue, which has a different solution.