Disk drive is making a loud noise, and is no longer reading the disc. just makes a loud clicking noise when injecting or ejecting the disc.

This is a bad drive. I'd replace it immediately before trying anymore disks lest it damage the disks. Usually this occurs when there is a read error. It is also possible there is a disk stuck in the drive, jammed inside, the sensors, sensing the second disk automatically ejects the one you put in. Either way remove the drive and replace it with a PS3 replacement drive. (Note a way to test if it's a bad bluray lense is to stick a DVD in the drive. If it accepts the DVD and plays, then it can only read the DVDs and not the blu ray disks. If this is the case you've blown the blu ray laser, it still needs to be replaced.) If all else fails take it to a tech place and have them diagnose the problem.

Does the disk get scratched when you take it out?
What is the loud noise like exactly? One continuous long scrrrr noise, or something like a tapping noise?
By download, you are referring to burning? Do the disks come out working fine and readable by other devices or computers?

You can try to put in a disk cleaner disk, such as :http://www.amazon.com/Maxell-DVD-LC-Lens-Cleaner-Blue/dp/B00000JPPI/ref=sr_1_7?s=electronics&ie=UTF8&qid=1308503466&sr=1-7
You can find disk cleaner things like that in bestbuy or radioshack. I am referring to cleaning the disk drive lens, not the disk itself.

Try to use a different disk brand, and if all else fails, I suggest giving it back via warranty, as most likely it is a mechanical problem with the drive itself, in which case you would not be able to fix it yourself unless you take it apart and try to find what is making the noise, which could take a while depending on your experience with electronics.

Maybe the disc reader in the Wii is having problems, this could be natural for the Wii, but if it isn't reading the disc, then try talking to the nintendo company and ask them that there is a loud noise in the Wii when its reading discs, they should know what to do. My Wii does that sometimes, especially Super Smash Brothers Brawl, but it still works though. hope that helps.

get a disc cleaner and clean your player. it sounds like your optics are dirty.

mine did the same thing it just kept ticking when i wanted to play a disk, id take to top off with the four tiny little screws and hoover it, mine still makes a bit of noise but works x

If it is still under warranty use the link provided

Nintendo Support

Fill out their form and be very descriptive when asked and they will repair it.

Alternatively you may choose to open the case and examine the damage - This is unadvisable as you warranty will be void and you could further damage the console

i had the same problem . what you do is you push the eject button ( where the disk goes ). push it several times it still doesent work keep on donig that . you will notice its working when you here the noise you get when its reading the disk . Hope this helped . p.s its a loud noise youll here it . if prob happens again do this again . this only happens to my halo3 copy . thats wierd .

Crack open the DVD case and see whats going on and try fixing it yourself. OR Buy a new drive off of eBay and transfer the firmware key over from the old drive too the new one.

Touch the eject button on the PLAYSTATION 3 system front for 10 seconds or longer to force the disc to eject. After removing and before reinserting a disc into the PLAYSTATION 3, turn off the system, and then turn on the system again to resume use.

If the disc cannot be inserted, you may need to send your system in for service, please click on the link below.