Cyclic Redundancy Check?

I'm trying to delete files from a DVD+RW but every time I try, I'm told D is not accessible, cyclic redundancy check. I keep ejecting the disc and putting it back in again but I keep getting the same message, and the last two times, I got a popup on my screen asking me to tap to choose what happens with removable drives. I chose browse files with file explorer and the disc is opening again as normal now but I'm still panicking. What's going on? What's happened to my disc drive?

EDIT: I right-clicked on the D drive, selected Properties, Tools, and Check under Error checking. Windows said it couldn't find any problems but I could still scan anyway if I wanted to. I chose to do so and after a few minutes, a message came up saying drive successfully repaired or something like that. And I was able to delete the files from the DVD. But I'm still panicking. What happened? Was it the the DVD, the drive, my whole computer? Do I need to calm down or rush my computer to the emergency room?

 

I almost had the same problem just now with another disc. I tried deleting the file on it and the usual box came up saying 0% and seemed to stick there, just like what happened when I was having problems with the first disc. The box would hang on 0%, I'd start looking at another window, then come back after a while to find the first file I wanted to delete gone. But when I'd try to delete the second file, I'd get the cyclic redundancy check error. Ejecting the disc and putting it back in again would cause the first file I'd seemed to delete reappear again. This time though, on the second disc, the box didn't hang on 0% for very long. The green progress bar went up to 100% and the file disappeared. But I've just now discovered, on ejecting and reinserting the disc, that it's still there! I'm gonna try the error checking procedure again. And then if it seems to work, I'm gonna try ejecting and reinserting again to see if the file's really gone, and then I'll check the first disc I was having trouble with.

 

That didn't work out as planned. I got the same drive successfully repaired message but when I tried double-clicking on the drive, Windows crashed on me. I had to restart Windows Explorer. Then when I tried double-clicking on the drive again, I got the green screen of death. Windows Explorer restarted AGAIN on it own. And when it came back on, I noticed the disk drive making this short initialising sound over and over again. I tried ejecting the disc and reinserting and it's making the same short initialising sound over and over again AGAIN! What the hell is wrong with my disc drive?!

EDIT: I just tried ejecting and reinserting the disc again. I double-clicked on the drive, got the blue spinning wheel, thought that Windows was crashing on me again, but then I got a message saying, "Please insert disc." OH GOD! I just DID! I made sure the disc was fully locked down on the middle thingy, closed the drive, double-clicked it, and it can't detect the disc at all! And now it's making that goddamn initialising sound AGAIN! I'm desperate! I'm gonna try restarting the computer.

 

I restarted the computer, inserted another DVD+RW with a video on it that I DON'T want to delete, and the drive worked perfectly normally. When I inserted the disc, it opened, and I was able to play the video. Then I took that disc out and put the previous one back in again. This time, it didn't open. So I right-clicked on the drive, selected Properties, and was told there was no more space left on the disc, even though I know there are a few hundred MB. Also, there was no Tools tab. Just took that disc out and put the one that did work back in again. It opened, I was able to play the video, I right-clicked on the drive, was told there were a few hundred MB on the disc, and I could see the Tools tab. So is there nothing wrong with my drive? Is it just the discs I'm using are ****ed up?

EDIT: It must be the discs. I put the weird acting disc back in again and opened CDBurnerXP to see if I could format it. CDBurnerXP took a while to open and then said it could detect no compatible drives. I closed it, took the disc out, put the functioning one back in again, opened CDBurnerXP again, it opened immediately, and had no problem detecting the drive. Panic over, I guess.

 

If you haven't already seen this, but if you have, no need to reply saying so:
http://www.wikihow.com/Fix-a-Cyclic-Redundancy-Check-Error